For my Keg-H I use Sugru, a silicone "putty" that sets over night. It is pliable, sticks to nearly everything, and is a good insulator. Google it for more information.
I formed two "finger bumps" on opposite sides of the lip that allow me to pick it up. Unlike a silicone band, which can slip off, this stuff is nearly permanent, and you can bulk it up in any shape you like for great grip. But, you have to pick the can up from the side. The tendency is to grab it from the top, and then you get a palm full of 200° vapor.
Send me an address via PM, or direct to email@example.com, and I'll send you a few. Green, Red, Blue or Black.