What about a toddler size pair of sweat pants? Is it the front leg? a sweatshirt or t shirt will work. have you tried different collars? My problem with the collar when my boy had stitches was his scratching more than licking, so the kid size sweatshirts with the arms cut off worked really well (as long as I remembered he had it on when we went to go outside to use the bathroom, I forgot a few times like a dope, that's why after 3 weeks of needing them he ended up with 6 coverups lol But when I left I always put the donut on him. (he destroyed numerous ecollars as well, the donuts he hates, but its on his collar and makes him bounce off the walls so it works for him great)
I have NOT tried this one, but it looks really good:
This is the one I use currently and have had great luck with:
ProCollar Cat Collars - About.com
I am really sorry you and Beastly have to go through this. Anxious for surgery no matter what it is. Good thoughts! I also got my boy a few extra kongs so I could put a bunch of stuff in them and have them already freezing, pumpkin and peanut butter are his favorite in his kong. Or how about some marrow bones from the butcher?