Microduck is a $399 open-source biped from Hugging Face and Pollen Robotics, 25cm tall and under 800g, that walks, picks things up, gets itself back upright after a fall and roller-skates. You can change how it moves in a browser simulator, then push the new behavior onto the real one. It landed the same week Nvidia was reported to be closing a $12.9 billion deal for Hugging Face, and the designs, the training code and the simulator are all open.

SnakeRank is a pay-to-rank leaderboard where the board is a game of Snake that plays itself: number one is the head, everyone below is a segment of the body, and when you get outbid you watch yourself slide back down it. Spots start at $5 and bids stack, so climbing only costs you the difference. Aryan Agrawal built it after outbid.lol pulled $200,000 in a week and the clones started landing, every one a list sorted by price, which struck him as a waste of a good idea when money shoving you up and down a board is already a game.

AureaCam scores your composition out of 100 in real time while you frame the shot, grading what's in the viewfinder against the rule of thirds and the golden ratio as you move the camera. Franco Saravia built it because knowing the rules and using them through a viewfinder are different problems. He taught himself to code in Bolivia, and it's a progressive web app in English and Spanish, so there's nothing to download, you open the link, give it camera access and start shooting.