Dremel Micro is a very nice little portable tool. http://www.dremeleurope.com/gb/en/dremel%C2%AEmicro-7694-ocs-c/ Unfortunately most of the bigger brothers add-ons are not compatible with Micro, so I've decided to build some for myself: The design is modular (10 pieces), in order to use as small amount of filament as possible. You can just combine the modules or glue them (except the covers). A short video with the add-ons: https://www.youtube.com/watch?v=0R3zlQfzsSY Just print all 10 pieces in ABS. The assembly is highly intuitive.