I just started quilting so I don't have any little pieces yet, but I crochet and I take one of those wire basket suet cake holders for birds and fill it with snips of yarn and hang it in a tree, the birds love it for building nests. So maybe you could do the same with the threads and fabric snips? I know the birds would love the threads to line their nests. :-) It would be like they are "quilting" their nest. :-)