I designed a case to hold my newly arrived TinyScreen and TinyDuino boards along with a small LiPo Battery. This project was designed in Sketchup and printed on a Makerbot 2 clone. The fit of the lid is quite snug, so you might have to modify the project somewhat depending on your printer's tolerances. I'm relatively new to 3d printing, so I'm sure this design can be improved. A video of the necklace assembly is at: https://www.youtube.com/watch?v=bsZfN7pkz1U