I have always been a fan of rotary tools! There is almost no limit to the things you can make with them and their uses cover a wide range of applications. The Foredom flexshaft system above is my new favorite tool! So far I haven't been able to actually perform any tasks with it due to my strange need to stare at it repeating "my precious" in a whispery voice :)
Also in the pic above, there are a few additions to the base config that I went ahead and bought now knowing I would use them. The bench mounting yolk, the hammer handpiece, desktop speed controller and the polishing bit set should help with a lot of the jewelry work I have in mind. I still have tons of diamond tipped as well as stone points and other cutters left unused from dead Dremels of days past.
I should have some fun creations to post soon!