The AI cracked an Enigma message after scanning 82 million combinations in 45 minutes
The AI in Antigravity built an Enigma decryption program, fetched repos, ran an 82M combination scan and decrypted the message in about 45 minutes.
45 minsaved
A random mix from the whole library. Shuffle for a new set.
Hobbies
Making things, learning and having fun · 988 ideasThe AI captions my video the same way as the last one
He asks the AI Agent to caption a video in Palmier Pro the same way as the previous one, and it does it from what it remembers. If there is no voice transcript, it writes code to make the captions happen.
The AI spotted why my Bluesky server broke, and found a security hole too
His self hosted Bluesky PDS broke after bsky.app added a new CORS header. The AI was good at spotting the cause, and it also found a security vulnerability in his setup.
This only partly worked. Worth knowing before you try it.
Bought socks, ordered Whole Foods groceries, booked a cleaning service, and picked
X poster someone had the AI run a day of errands: bought socks, ordered Whole Foods groceries, booked a cleaning service, picked a burger dinner, and saved $200 by canceling unused subscriptions.
$200
Gift app built to stop giving books people already own
After giving someone a book they already had, he used AI CLI to build a small app for gift ideas. It suggests gifts from his own 5 star book reviews and the other person's Goodreads wishlist.
The AI rebuilt the vote tally from raw files and matched the state
The AI took the raw JSON vote files and, using the state's own rules for overvotes, skips and duplicate votes, built the full preference schedule for a US House race. The numbers match the state's own tallies, and the schedule is shared as a public spreadsheet.
The AI rebuilt my blog from a WordPress export. I left WordPress after 15 years.
He gave the AI his WordPress export and told it to rebuild the blog in Astro. The new self hosted site is live with a modern style, a dark theme and better accessibility, and it ends the $110 a year WordPress charged him.
$110a year
The AI’s auto-reply promised a visitor the user was home when he was not
A Spanish startup magazine recounts a Sept 28, 2026 post by Simon Willison quoting the AI directly: the agent's pickup auto-reply had assured a visitor, Usman, that the user was at home when he clearly was not; Usman showed up at the building around 9:15 and waited, messaging repeatedly, and nobody came down. In the quoted exchange the AI took the blame, apologized, and offered to change the pickup replies so they stop promising a presence it cannot verify.
This one went wrong. See what happened before you try it.
The AI turned a bad program website into a filterable table on my phone
He needed schedule information for programs offered by a public institution, and its website was terrible and badly organized. The AI made a new website that organized all the information into a filterable table that runs on his phone.
Agent 'Larry' scheduled a student's final-exam week around two projects and night shifts
Her AI Larry built a day-by-day study plan for Sep 23-28 around a final exam (IT Frameworks: ITIL, COBIT, TOGAF, Agile), two projects and 3-11pm work shifts, with nightly check-ins and a time-stamped daily checklist she confirmed.
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.