Marking your pliers with crystals

Yesterday I was teaching a jewelry class.  Some of my students had the same tools that looked alike (e.g. all crimp pliers look alike). While teaching classes  (or taking a class), you may accidentally grab somebody's pliers. To know which tool is yours,  simply mark it :) 

I have all my pliers marked with Swarovski hotfix crystal rhinestones, 5mm.

Clean the surface of your pliers from grease and dirt. 

These crystals are "not recommended for leather, water resistant material or non-porous surfaces", so I put a tiny drop of 'Jewelry&Metal Glue'.

Also, you can use adhesive backed crystals (you find them in scrap-booking department). There is just one snag - those crystals may "wear out" and have not pretty look.
Also, you can use paint to mark your pliers. Just do not paint handles.