If you run across these, pick up a few.(limited time edition). They are a flexible hard rubber, and palm sized for a variety of uses. Being food grade, they seal well, and seem to be very durable. They would do well for a fire starting kit or tool caddy, jerky jar or soap box for pack use. Tea or coffee canister, sugar bowl. Nice little containers. I have about half a dozen so far, and have put them to work. Enjoy.