How to Make a Fake Arm Cast. A fake arm cast can be useful in a number of situations. Maybe you want to play a prank on your friend, or maybe you need a cast for a costume. You can use a simple method, such as making a cast out of toilet.
Cortex cast for fractured bones by Jake Evill. casts for fractured bones could replace the usual bulky, itchy and smelly plaster or fibreglass ones in this conceptual project by Victoria University of Wellington graduate Jake Evill.
CastShield Arm - Waterproof cast protection for your arm cast, brace, splint, or bandage
This is one of my favorite tricks to deal with a cast- use a foam ball and stab it with your favorite pen. The bulk of the ball allows you to control the pen when you cannot reach around it with your finger tips!