The Cube of Fidgeting!  Keep your fingers busy, releive the stresses of dungeon mastering!  In the shape of six-sided dice, this far more entertaining than a spinner!
 
This is a new product, and to be honest I didn't think it was all that great when I first picked it up.  But now ... geez, I can't stop folding it infinetly and getting in a rhythm.  Even people at work want to borrow it!
 
Personally, I love this "infinite Galaxy" ... it's like folding space!  LITERALLY!
 
Comes in a free velvet bag!