Gather your friends for a fun afternoon of crafting while making these colorful and unique hand-dotted tumblers. Along with being easy to create, the finished tumblers cost around $3 each to make.

Sometimes describing how a lock actually works can be the hardest part of teaching someone about lockpicking. [Mike Gee] has designed an acrylic lock that may just be the ticket for these situations.

If you’re reading Hackaday, there’s a good chance you had a rock tumbler in your younger days. Hell, we’d put odds on a few of you having one rumbling away in the background as you read this. They’re ...