Build your own furniture with Ponoko

A set of six coasters, graphically striking and ideal in 6mm whiteboard, with its practical waterproof and wipeable surface.
Each coaster is 11cm square (approx 4.4 inches), so you can actually fit a decent-sized coffee mug on it. Of course, these coasters will also service other drinks superbly (although the "coffee" motif becomes somewhat less relevant). But then, you could choose to throw dinner parties for friends whose names start with C, O, F or E. Alternatively, you could use the coasters to spell out lots of other entertaining words (provided you consider words like OFF and FOE to be entertaining).
No assembly required (apart from the spelling).