I needed a projector height booster, and although my old Droid Incredible was perfect for the job, I was tired of using my phone as a projector stand in meetings. So I looked up the thickness, and made a nice little SCAD script to generate a small cylinder of the right size. The embedded OSHW logo (a) looks cool and (b) is a talking point about how it was made with open source hardware and software and (c) makes the projector leg not slip out.

Choose variables that work for your use-case, export STL, print, post a pic, use!