After hand surgery my hubby needed a waterproof cast cover so that he could shower and go boating. This video shows how he made an inexpensive cover out of a dry bag and Gear tie.
After his injury heals and cast is removed he will find many other uses for these 2 products. Please check out my occupational therapy website and books for more clever adaptations to solve many types of challenges... http://www.RecyclingOT.com
Source: Do-It-Yourself Waterproof Cast Cover by RecyclingOT on Rumble