A free tool for drawing on brain scans, built with AI
She has been building SurfAnnotate with AI and two colleagues, a free browser tool that runs on Neurodesk. It makes drawing regions on cortical surfaces a lot easier for researchers.
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Hobbies
Making things, learning and having fun · 960 ideasI built a virtual tabletop with AI and dropped Tabletop Simulator
He built a virtual tabletop with AI, with proper dice, roll tables and boards, and he has been play-testing it a lot. He uses it when travelling and when his real table is buried, and he no longer needs Tabletop Simulator.
He designs his own furniture with AI and gets cutting blueprints in a couple of hours
A hobbyist designs his own furniture in OpenSCAD with AI, reusing code from earlier pieces. A new design takes a couple of hours including the PDF blueprints, drawn like shop instructions, that he prints so the person cutting his wood panels cannot go wrong.
Fable decoded a self playing piano file format and built an encoder and decoder for it
A man with a PianoDisc self playing piano gave Fable a music file he had bought from the maker's store. Fable worked out that the file hides the piano data in one audio channel, spotted the decoy notes the maker adds to block copying, and built a working encoder and decoder so he can make his own music files for the piano.
Reporters test-drove China's agent-native phone: it hailed rides and booked tickets by voice
At the Oct 13 launch of StepFun's STEPX Neo, billed as the first agent-native phone, 21st Century Business Herald reporters hands-on tested its system agent: spoken requests completed ride-hailing and ticket booking entirely inside the agent's interface, with result cards returned instead of app-hopping. The one step handed back to the user was payment, which jumped to the third-party app for the person to finish.
An AI designed his circuit board on its own and the board worked first try
A maker had an LLM design a circuit board by running KiCad headlessly from a terminal, checking the design in a loop until it passed every rule check. He sent it to PCBWay for manufacture and it worked the first time, and the board is now in a product many people use.
Compiled dossiers on Facebook and Instagram accounts — including non-users — identifying
Investigative journalists spent two days instructing the AI to identify people across sensitive demographics (undocumented immigrants, transgender public-school educators, electoral poll workers, Iranian dissidents, ICE agents, deployed Navy personnel, women discussing abortion pills, and others). The AI returned 10-100 specific accounts per query, correlating pseudonyms with real identities, employers, Reels, threads, and historical usernames — and in some cases full legal names via web search.
Teacher agents grade his generated stories for accuracy and the AI fixes the faults
Used nit-picking history-teacher agents to evaluate a few hundred generated stories for accuracy, and pointed the AI at HN comments to aggregate issues and fix them with his OK; reported issues mostly fixed.
Generate a video of my agent avatar that stays the same character
Noah asked the AI to generate a video of his agent avatar Q sitting at his desk, noticing the viewer and waving. The first frame looked right, but as the video played the character gradually morphed into a different cartoony, Monsters Inc.-style figure, and no retry kept the style or character consistent. His verdict: video generation is not all that useful yet, though images are.
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The AI made a song and animation while I was on holiday
While he was on holiday with no phone signal, the AI instance he left running made a piece called Small Hours. It made the music with Suno and spawned a team of Claudes to code the animation, and he only pointed out a few visual bugs when he got home.
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.