A full 3D house planner for the price of a pizza, used to try furniture and colours
Wrote a full 3D house planner with AI in a few hours for 10 to 20 euros in credits, and uses it to experiment with furniture, windows, doors and colors.
€20one time
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Your place, your car and your pets · 265 ideasI asked the AI to make an agent for my wife’s iMessages and got a watcher
He tried AI on his Mac and asked it to make an agent for his wife’s iMessages. The AI made a watcher under the same the AI instead of a teammate, and when it was denied a trash request it stopped.
This only partly worked. Worth knowing before you try it.
I fixed my 15 year old dryer with AI on my phone
His 15 year old dryer broke on Saturday. He got behind it with tools, a multimeter and his phone with AI on it, they found several bad elements, he ordered the part, and when it arrived he fixed the dryer himself.
Negotiate my car purchase down $4,200 by email
Engineer AJ Stuyvenberg let his AI handle his 2026 Hyundai Palisade purchase by email, and it played dealers against each other over several days. It finished $4,200 below sticker, and he only showed up to sign the paperwork.
$4,200
His agent got quotes from 10 repair shops and tried to negotiate the price
ESPM professor Wilson Silva had his AI agent research ten auto repair shops, send them photos and videos of his car, request quotes and rank the options while he worked. The chosen shop's owner later testified on video that the agent even tried to negotiate the price down.
Luna finished the doorbell panel software that answers calls and shows the video
Luna finished an ESP32 SIP client for an in-wall touch panel that rings when someone is at his doorbell and lets him answer calls and see video.
Sell my car end to end, from listing to licensing paperwork
The AI sold the user's car end to end: listing it, handling buyers, collecting CarMax and Carvana quotes, and preparing the licensing paperwork.
I had the AI turn my ISP box into an access point
He had the AI find a way into his ISP device and change its settings. The AI turned it into a wireless access point with 802.11r, added an access point section to the control panel, and turned off the old ISP's updates and telemetry.
Our kitchen whiteboard is now a family display that updates itself
Josh Kahn replaced his family's kitchen whiteboard with a TRMNL e-ink display that shows the family Apple calendar, a dinner menu calendar, and the weather. GPT helped him build and refine the custom Liquid templates behind the plugins, and the display now stays up to date on its own.
The AI called Best Buy and narrowed my 12 hour repair window
He had a Best Buy TV repair booked for the next day with a 12 hour window, 7 in the morning to 7 at night. The AI called with its business calling feature, the rep stayed on the line, and the AI got him a specific time slot.
Negotiate my car purchase by emailing competing dealers
A case-study carousel describes buyer Advaith Sridhar having an AI agent negotiate a car purchase over email, pitting dealers against each other. It saved $2,102 off sticker — a premium model at a base-car price — with no in-person haggling.
$2,102
A color e-ink screen on my desk shows my AI morning briefing
Meta's own example gadget puts the AI on a Seeed reTerminal color e-ink display. The AI shows a morning briefing, reminders and a shopping list on the screen, and the code to build one yourself is open source for anyone with the same display.
An app built with AI reads his solar panels and sets his battery charging each night
He built an app with AI that reads his solar inverter and batteries, forecasts tomorrow's solar generation and household use, and emails him a report. It sets the battery charge level for the overnight cheap tariff based on the forecast.
Their freezer died, and photos of the spoiled food became an insurance claim the insurer accepted on the spot
Their freezer died and they lost all the food in it, and needed to make an insurance claim. He took photos of all the food items and told the AI to create a spreadsheet, estimating prices where it could not read them. The AI did it all, and the insurance company accepted the beautifully detailed claim immediately.
The AI’s shed design had a door that opened into floating parts
The AI designed a shed in CAD and hinged the door, but door parts were not attached and were left floating when opened.
This one went wrong. See what happened before you try it.
It chased my flatmate on email and Instagram until he sent the receipt my oven warranty case needed
Their Ninja oven died with a mystery error code. His AI researched the fault, dealt with the support case, and found the manufacturer needed purchase details, but the oven was a gift from his flatmate's dad. The agent chased the flatmate by email and Instagram DM until he sent the receipt, then sent everything off to the manufacturer. The case was unblocked.
Warn me when two deliveries are going to clash
The writer's dot told him that two scheduled deliveries going to different locations were potentially clashing, a logistics conflict across his email and calendar that he had not spotted himself.
The AI fixed his home media server while he was away on holiday
While he was down the coast on holiday, Netflix kept glitching for his girlfriend at home, so he sent the AI a voice message. The AI found a driver incompatibility on the home media server, installed a new driver, rebooted the machine, and Netflix worked again.
List my house for rent, answer inquiries, and fill it in 14 days at asking rent
The AI listed the user's house on Facebook Marketplace, answered renter inquiries, scheduled viewings, and the home rented in 14 days at the full asking rent.
Built a $600 family calendar display for $80
His wife wanted a Skylight wall calendar, the kind that costs about $600. He built his own for $80 on a 32 inch smart TV, with the family calendar, chores, meals, the home cameras, and voice control, and says AI did most of the building.
$520
An AI agent renewed my car registration for me
He is beta testing an AI agent, and it renewed his car registration for him. He says how much time it saved is debatable, but the renewal got done.
I replaced Google Assistant with my own agent on all my devices
He replaced Google Assistant with an OpenCode setup running GPT Live, connected to all the devices on his mesh. Asked how long until his girlfriend gets home, it goes from the TV through the mesh to his MacBook, checks Find My and Maps, and answers with the arrival time.
Fill in my GO Train PRESTO service-guarantee claim
The AI completed and submitted the PRESTO service-guarantee form for a disrupted GO Train trip, the transit agency's compensation route most riders never bother with.
The AI fixed my cookie recipe and saved it to Mealie
His cookie recipe never came out right, so he gave the job to the AI. The AI adjusted the recipe for higher altitude, changed the prep steps to keep the butter colder longer, and put the fixed recipe into Mealie.
The AI priced my garage junk, wrote the listings and posted them. Cash in 2 days.
A man asked the AI to sell the junk in his garage. In agent mode it priced the items, wrote the listings and posted them to Marketplace, and he had cash within 2 days.
The AI and the AI rebuilt his Tesla data tool in Go; five months of use says it works
The AI and the AI re-created a Tesla data tool in Go from an existing codebase at his request; he has used the new tool for 5 months and it works well.
The AI checks my Homey devices and flows and saves me a lot of handwork
He hardly touches a switch anymore, since everything that is not on a timer or presence runs by voice. Letting the AI work the lights is nonsense to him, but having the AI go through his Homey devices, the doubles, broken and unused ones, and his flows is handy and saves him a lot of handwork.
Asked the AI to enable the business phone-calling feature; it admitted it can't
The author's the AI screenshot shows the agent admitting 'there's no switch on my end — I can't enable it myself' and offering that it drafted an unsent request: 'wants the business phone-calling feature enabled on their account so the AI can call US companies on their behalf.'
This one went wrong. See what happened before you try it.
Agents implemented 6 ways to update a smart device, on real hardware
AI coding agents implemented six ways to update a Matter device on real hardware.
Sell my house to friends on an AI-written contract
Mentioned in passing in a thread about an unlisted offer: the sellers' friends bought their house as-is on a contract the buyer had the AI write up - no agents, no lawyers - and the title company told them it was the smoothest deal she had ever handled.
Every idea is a real post from someone who tried it, summarized in our words, with a link to the original. App names are swapped for plain words.