Practical stuff, fun stuff, robot parts for arduino. DIY - everything has its own appeal to me (almost). The first thing I ever made was something I could use right of the printer: There are rules for lobster traps in Norway and my crab traps had a circular exit of 80mm (by law to let the baby crabs leave the trap) - lobster traps can have a 60mm opening. Made a square with a hole of 60mm and tied it over the 80mm opening - that feeling was priceless, even though the print was easy as can be =)