this is what I do too

This is probably wrong, but I use smaller pieces of poly batting to wipe away little pieces of thread on my cutting board, ironing board, around my sewing machine. I don't always have my Swiffer handy but I usually have batting.

My 5"wide (or less) scraps get cut up to use as a dust pad on my swifter...picks up the threads like a charm...then use my dustbuster to get the fine particles of dirt or sand that the pad didn't hold.

I use my batting scraps in quilted purses and tote bags or placemats.

One of my quilting groups will spend a day a few times a year where we get together and ZigZag sew the pieces together to fit some of our quilts as batting. Once I had 4 different kinds of batting and I asked about that. Our very skilled [and I mean this!] leader said it didn't matter as it was for charity/utility quilts. Guess what? once it was in a quilt you really didn't notice the difference.
This from a group that does over 1000 charity quilts a year.
It works.
Smaller pieces of batting go to the Humane society group and they use that for pet beds/blankets they make.
AliKat

I keep a scrap of batting by my machine for loose thread. Then I can throw the whole thing away.

Great idea.

I use them for table runners, wall hangings, sometimes I cut them into 5" squares then I have them ready when I want to make a rag quilt.

I piece mine together using my "three step" zig zag stitch. I think a regular zig zag leaves a little ridge when the two pieces come together. The three step does three stitches one way and then three stitches the other way and doesn't leave a ridge. I use left over pieces for small projects like table runners or wall hangings.

When I have left over pcs of batting too small for quilts I stuff a pillow for cats or dogs and give them to an individual pet owner or to my vet