Eureka! Rejoicing!
This weekend I was making some DS (it is a small hand-held game) cases for my granddaughters. The directions called for iron-on batting, which I didn't have. I thought I would just use regular batting, non-iron-on. Then I happened to see the trimmings of the last quilt I made, the edge pieces that I had trimmed off after quilting, but before binding. There were strips of fabric with the batting spray basted on. I gently separated the fabric from the batting and pressed (by hand, not by ironing) the batting scraps onto the fabric pieces of the cases I was making. They stuck together like magic! The spray-basted pieces were still sufficiently sticky. I just cut the batting out around the fabric. It worked great!
Maybe others have used this idea before, but I had never tried it. I was so excited that it worked so well.
Learning things like reinforces my theory to NEVER throw anything away. (well.... almost never!)