Set of 20 GREEN plastic thimbles. Tapered to fit almost anyone's finger. Long so they can be seen on stage. 
 
Since you are getting 2 sets and 1 is in a different color, you can do color changes and transpositions.
 
Make them appear, disappear, jump from hand to hand, multiply, change colors and transpose.

Learn some thimble magic, moves and misdirection a little at a time, before you know it you will have and a visually appealing and amazing manipulation act!
 
No instructions but there are many tutorials on You Tube.