Saw these Wobble Wedges on Cool Tools. These things could make great promotional tchotchkes that would actually serve a practical purpose. Print a logo, web site and a slogan like "Stability brought to you by ACME Computer Systems" on them and pass them out. I'd be happy to keep a handful in my bag and leave them stuck under tables where ever they are needed. In coffee shops and restaurants tables get jostled around enough that you can be confident they would get bumped out of place from time to time and have to be put back in place. The brand message would get seen on a regular basis and associated with a "well isn't that thoughtful" idea.