2-13/16" 71mm Submicro Micro Mini Cable Ties Zip Ties Natural 100ea. 

Length: 2.79" (2-13/16") (71mm)

Width: 0.063" (1/16") (1.6mm) 

Maximum clamping dia: 0.43" (7/16") (11mm)

Rated strength: 7lbs. (3kgs)

These are the smallest available zip ties that I can find. Perfect for tying up very small wires or anything else you can think of.