I love coming across vintage Inspector Gadget merchandise on Ebay. For instance, up for auctioning right now is this very charming-looking puzzle game inspired by one of my favorite episodes, The Invasion. I'm not a big puzzle enthusiast myself, but Gadget fans who are might get a kick out of this. At least the illustration looks pretty good (I especially like the disguised Brain peeking around the corner).
*Hang on, isn't Inspector Gadget always puzzled?