Dave, why not ask your vet for one of those spoon-type aluminum splints? It's easier to avoid pressure damage with them, since they're already formed to fit a paw.

And the self-adhering wrap makes a pretty good muzzle as well as a bandage, although you would probably have to cut it down (lengthwise).

Also for cats, a sturdy pillowcase makes a really good emergency pet carrier, esp when there is debris like ash (fire or volcano type). Tie it with a shoelace. And a figure-8 type harness is better than a collar, if snugly fastened.

Sue (ex-vet tech)