Whenever I sew something, I try to use up every last bit of fabric. I've made all sorts of products to use the smallest bits of beautiful fabric--check out the patchwork pin cushion. Even after making something like the pincushion, there are tiny scraps leftover. How can you avoid throwing these bits away?
For 100% cotton and all other natural fibers (100% wool, linen, etc.), the small scraps can be composted. The fabric is biodegradable, and the small nature of these scraps mean they will break down relatively quickly in a compost pile.
You cannot compost synthetics. Any polyester fabric is not biodegradable, so it's not going to break down in a compost bin. This includes thread--most thread is 100% polyester. If you have scraps that have parts of seams sewn with poly thread, they cannot be composted.
From here on out, Dancing Threads RI will not buy printed fabric that is synthetic! The vast majority of my fabric is 100% cotton, but occasionally I work with indoor/outdoor fabric, a natural/synthetic blend or recycled felt (recycled from plastic water bottles, but since the scraps of felt are plastic, they are not biodegradable). I will use up what I currently have in stock, but I will not purchase any new synthetic printed fabric. For now, I will continue to use ripstop nylon and PUL for linings, and nylon mesh for produce bags. To be honest, I have not yet found a viable alternative. If you have suggestions, I would love to read them in the comments!
What about polyester thread snips? PUL and nylon scraps? I'm not throwing those into the trash anymore! I will share some ideas for using scraps as filling for other projects (instead of polyfill which is 100% polyester/plastic). For now, my scrappy sailboat ornaments/decorations are filled with these bits of leftovers. I have a tutorial lined up for something seasonal and quite useful that I think you will like. Check back here next week!
Knitters are the best! I knit badly, but I love to sew lovely bags to keep their projects, needles and hooks in order. I also teach sewing, and you can find many sewing resources here. Welcome to my blog Dancing Threads RI.