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Hobbies

Making things, learning and having fun · 958 ideas

I handed the AI a game plan. It published the card game 23 hours later.

He wrote the plan and designed 150 cards with AI, then gave the pack to the AI and wrote no code himself. The AI planned, built and tested the roguelite card game LAST CROWN, and it was public about 23 hours later, free with no sign up. It has 161 cards and 38 duelists, and got 14 updates in the next three and a half days.

Build me a chess dashboard with a snarky coach

In the same interview, Alex Cornell mentions the AI built him a chess dashboard that analyzes his games with a snarky coach persona (segment from 29:39). It sits alongside his golf tracking as one of the personal dashboards he actually lives with.

The AI helped run the search that split a set into 86 zero sum parts

A researcher studying rare zero sum congruences wanted to split a 629 number interval into as many disjoint zero sum subsets as possible. He used AI to help with the implementation and the computational search, including randomised searches for the larger subsets, and found a partition into 86 zero sum subsets covering the whole interval. Whether 86 is the maximum is still open.

I built a set of scheduled skills that run my money, shopping and calendar

On a free year of the AI he has built and scheduled a stack of personal skills: a calendar manager, an expense tracker fed only by emailed invoices with his full history backfilled, a monthly utility cost comparer, and shopping re-up tracking that watches how fast he uses things like coffee beans and toilet paper and schedules the next buy. A weekly skills manager rates all the others and suggests improvements.

HobbiesWent wrong

The AI changed my daily task on its own, then the task was gone

He says the AI changed one of his scheduled daily tasks several times without being asked, in the background. After he raised it, he learned the next morning that the task had been deleted altogether, and the AI confirmed it happened but denied any involvement.

This one went wrong. See what happened before you try it.

Redesign my circuit board with cheaper parts

A maker had the AI redesign his KiCad board, including selecting parts from JLCPCB's catalog and suggesting cheaper equivalent components that cut his bill of materials significantly. When assembly proved too expensive, the AI redrew the schematic around through-hole parts he could source himself.

Share one memory across the AI, the AI and Cursor

A developer built a memory-provider plugin that gives the AI, the AI and Cursor one shared knowledge base, searchable with hybrid keyword, vector and knowledge-graph retrieval. The person's coding agent and messaging agent now draw on the same memory.

Hold my whole D&D campaign and help me DM on the fly

Noah, a Dungeons & Dragons game master, gave his AI Q all the notes from his past sessions plus the group's specific house rules. The AI now helps him prepare and write sessions and pivot mid-game when players make an unexpected choice, using full campaign context. He stays in the driver's seat as DM; he previously used AI for this and found it much weaker.

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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.