Just thought I would post this seperate so others will see it: "What to do with left over thread".
I have a commercial machine, so I end up with lots of wasted threads. Sometimes I just toss the bobbins (I use prewound throw away). The extra thread that I get when changing out my threads, I put in a basket and cut them into 3" pieces. My grandson hangs them in the trees in the spring, it fun to watch the birds take the threads to help make their nests. No waste, and he loves doing it. You don't want them to long, they get tangled, and the birds can't pull them off the branches.
Mary Ann