Isn’t the bug catcher above cute? My aunt made one for each of my older two boys and I thought they were a great idea. They are made with plastic canvas, plastic lids for canning jars, and a pipe cleaner. She also added a few bug stickers to the lids. It looks like she just measured the circumference of the lids and cut the plastic canvas to that width and made the height whatever she wanted. Then she used a ribbon to stitch the canvas together. She glued a lid to one end and used a pipe cleaner for a handle.
I had an idea that would make these more frugal. I think peanut butter jar lids would work great since they are the same size as the plastic lids for canning jars. Also, I think grosgrain ribbon could be cute instead of the pipe cleaner for a girl. Hot glue would be what I would use to attach the lid to one end, but there may be another option that would work as well. Just be sure to not glue the other end or you won’t be able to put any bugs inside.