Becky Stern of Craft wrote about these accident-explanatory slings.
I really could have used one of these after my knee surgery, except it would have had to play video of what the doctor found inside my knee! This would make a great screen printing project if you know someone with a broken arm, or if you're adept at one-armed screen printing. Perhaps these accident-explanatory slings will be an option at hospitals in the future. I'd like to see the "shark attack" or "you should see the other guy" editions; those were my two most common fallback stories while on crutches.