Here's an idea for you. Find somebody who does wood work and ask them for their wood shavings. I used to know a guy who made bowls and would have huge bags, like the paper bags used to collect leaves, of shavings that he was more than happy to give me. He said it felt better to know they were being used and not sitting in a landfill. I just posted a note on Nextdoor and ask if anybody had wood shavings they wanted to get rid of. It was a win win! 😄