Shed floors I’ve done in conveyer belt rubber matting. It’s like horse rubber matting but I got it for next to nothing as it was used and scratched. But the reverse side was like new. Stable matting, rubber garage floor matting or anti fatigue matting might be good ?
I have had success in getting vynil floor scraps for free when I was lining double hutches. The guy apologised that the 2 pieces weren’t matching, I said I’m sure the rabbits won’t mind :lol: