My daughter had a few rolled-up posters that kept springing off the wall — regular poster tack wasn't strong enough to hold the curl flat, and we didn't want to poke pinholes through the posters themselves. These Outus magnetic push pins solved it. You push a pin into the wall, lay the poster over it, then snap the included magnet onto the pin from the front to clamp the poster in place. The magnets are strong, and the only damage is a tiny hole in the wall — not in the poster. — MF

A friend gifted me a fancy five-color ink-jet printer they were not using. It would be great except for a common malady: the manufacturer no longer supported a driver for it for my computer. This calamity is so common there is a community solution: Gutenprint (formerly Gimp-print). Public minded angels post open-source drivers for all kinds of computer-printer combinations, available for free downloads. Their Mac support is spotty, but older versions can still work. My needed driver was there. One caveat; it only supplies the printing functions, but lacks the maintenance and cleaning cycles. Still, I now have a printer that prints. — KK

This livestream of a Dutch canal lock has a virtual doorbell viewers can ring to snap a picture and let the operator know fish are waiting to be let through. It doesn’t really open on demand, but the idea is very charming. If you scroll down you can see all the fish that have been recently spotted. I found it in the Deepculture newsletter, just back from my first trip to Amsterdam where I rented a boat and navigated the canals. It felt synchronistic, like a souvenir from my trip. — CD

This one is for the people with breasts. I’ve been stuck in Victoria’s Secret sizing since adolescence because I could never figure out how to translate my measurements to any other brand. Over the years I tried in-person fittings and indie bra makers, but I’d ultimately go back to the devil I knew. This illustrated NPR guide by a professional bra fitter is what finally got me unstuck. It walks you through how to measure yourself at home and explains the different styles of bras. Once I had my true size, I tried Negative Underwear (worth the influencer hype, in my opinion) and now it’s the only brand I wear. I hope I can finally retire from the search for the perfect bra. — CD

Software engineer Rob Ennals wanted his 11-year-old son to understand how modern AI works, but couldn’t find a tutorial that was rigorous without being either hand-wavey or impenetrable. The result is Learn AI Layer by Layer, a free online book with interactive playgrounds in every chapter. It assumes middle-school math. If you want a clear, hands-on explanation of what happens inside an LLM, this is the best one I’ve come across. — MF

I am a huge fan of Dan Pink’s short pithy advice videos, some of which I have recommended before. His latest one is on an unconventional topic: how to spend money wisely. In a lot of ways, this particular advice is more important to grasp than the usual advice on how to make money, yet few talk about how to spend well. Science-based, no fluff, this distilled wisdom is well worth your 8 minutes. — KK