Ah, the innocent childhood pleasures of LEGO. Brick by tiny modular brick, we whiled away hours building all manner of rectilinear toys, only to break them down and begin all over again. Now that your innocence has fled along with your youth, perhaps it's time to experiment with the dark side of Denmark's favorite toy with the new book, Forbidden LEGO: Build the Models Your Parents Warned You Against. Disregarding the official rules of LEGO (rules? who knew?) and some of the basic tenants of safety, authors and confirmed LEGO master builders Ulrik Pilegaard and Mike Dooley present an unholy do-it-yourself guide of taboo techniques (i.e. glue, brick modification, non-standard parts) for creating blocky abominations, including less-than-lethal weapons that fire candy, ping-pong balls (above), and even other LEGOs. Advance order your edition and start stockpiling your illegal arms cache. $25. Go to www.nostarch.com