Cat cone suggestions?

My poor cat scratched his head by accident and won't leave the cut alone, so it's cone time. Unfortunately, every cone we've tried had been incredibly disruptive to his life. The newest one is at least lighter and he eats okay wearing it, but he's still miserable.

I'm willing to even make one if someone has a pattern they've used. I tried a hat, but he gets it off right away. I clip his claws shorter already, and it's not quite enough to keep him from reinjuring himself.

Any suggestions? He has allergies, so this is going to be an occasional problem.