On a recent trip to IKEA, we almost walked right by this ingenious product because we didn't see it. What we did notice, however, was the floating chairs. KROKVIK chair hangers are brackets which mount to the underside of your table to make floor cleaning easier. They're practical for anyone with lightweight chairs and a dirty floor but they're a particularly big idea for small spaces.
Jump down for prices, links, and IKEA's table/chair recommendation.