ATTiny85 and LR44 holder

This is basically an assembly of several other Things, to be able to hold an ATTiny85 and 3 tiny LR44 hearing-aid batteries. (We got a ton of expired Duracell 675s at a garage sale, so I made this to help us work our way through those... Three seems perfect to run an ATTiny and a few LEDs!)

I used it to be the battery/microcontroller pack for an LED necklace running a flickering Arduino sketch, and it sat on the back of my neck. I'm also planning to use it on a hairclip to be a pack for some