The Sneaky Uses for Everyday Things Ultimate Edition includes three Sneaky books in one collection. This set is priced at 24% off the list price of all three titles put together.
You are getting 450 pages of DIY sneakiness. That should keep you busy for a while. You can use these Sneaky Uses books as a practical guide to build useful devices, enjoy it as a fun read, or as a trivia guide to impress your friends.