The materials needed are scissors, a guitar pick, instant or hot glue, electrical tape or duct tape and a small amount of tiny rocks.
Next you will want to put a small amount of glue on both sides of the pick. Quickly after you place the glue put a couple (three or four) of the small rocks in the glue.
After you have done this cut out a piece of tape a bit bigger then the pick, and place it on the backside of the pick so that the rocks remain facing up.
Next cut part of the tape off near the top of the pick, cutting along the top of the pick. This will create two flaps on either side of the pick. Fold these down.
Repeat the last two steps but place the tape on the side of the pick with rocks glues to it. Try to fold it so no bubbles appear. After that you are done. The pick should now have two small bulges on it that help add friction. Plus you get less hand cramps because you do not need to hold the pick as tightly anymore.