If you have a small child running around, and you want some extra peace of mind, Apple’s AirTags can go a long way. There are lots of ways to attach them, but most are too dangly to survive a day on an active a 4 year old.
I designed this discrete and secure twist clip to keep tabs on my son when we last visited our favorite vacation spot. It’s just two parts, and can attach anywhere on clothing or fabric.
I like to attach mine to the back of t-shirts or swimming tops. They’ve yet to fall off during rough play and they’re pretty discrete. But if you know what you’re looking for, you can easily check whether they’re still attached.
Buy and Download
You can purchase the file to 3D print the AirTag Twist Clip for $2 CAD.
Any 3D printer should be able to print this without supports. PLA works just fine, but note that PLA does expand a bit when wet, so PETG might be a better material choice if the pool will be part of your day.