We have a stack of old Boy Scout books that Noor likes to browse and which are great for ideas on everything from insect collection and identification to wilderness safety. In the manual for the Nature Merit Badge, she found instructions for making a "Killing Jar" to facilitate growing a collection of insect specimens.
She measured the diameter of the jar and traced the lid, recognizing that she needed to make the cardboard layers a bit smaller to fit through the opening. The bottom layer of cotton balls are wet with nail polish remover.
She promptly caught a wasp that was hanging out on the window and it died very quickly.
The book we have was printed in 1970, but the copyright is 1952. We wondered if the newer books still have this project and if so, if it is still called a "Killing Jar."