I'm the kind of person who doesn't really throw anything away, and I usually seem to end up finding something to use random project scraps for.
I had some scrap Climashield cuttings from a few projects, just little corners and pieces. Also a small square of Momentum left over. I sewed the Momentum into a 6 x 10 (inch) rectangle and stuffed it a firm 3.5 inches thick with the Climashield cuttings. Resultant pillow weighs 1.25 ounces. I'll probably add .25 ounce more cuttings for a firmer pillow later since I tend to be a side sleeper.