I don't mean to brag, but it is a rare occassion when mine takes something other than what is in the toy basket.  This includes Tiah and Kopper (my first Yorkie).  They will do what I call the "catfish routine" (search the floor with their nose 1 milimeter away from it), but that's about it.  Brittani has accidntly left a bag of candy on the floor and Tiah wouldn't touch it.  My Mom's Yorkies actually take things off of the coffee table (checks included!).  Tiah has full access to the laundry room and has never brought anything out. 
 
 