Before dropping off your donation box to Goodwill, pick up a copy of Cy Tymony's Super Sneaky Uses for Everyday Things ($11) and convert your junk into handy treasures. This book contains a ton of do-it-yourself inventions, complete with step-by-step instruction and illustrations to turn common items and devices into something extraordinary. To pique your curiousity, we're sure you didn't know you can make plastic out of milk, a radio from a penny, a boomerang from a bookmark, a boat from milk cartons and even a plane using sleeping bags.