Here's a cute thing to rest your mug on.  Works for water glasses, too.   Definitely a cunning plan.
 
These coasters measure 3.75" square and 1/4" thick.  The super glossy surface is waterproof and heatproof and looks great, too.  Good for hot or cold beverages to protect your fancy surfaces from condensation, or just to claim or pretty up your place setting.  You could even use it under a hot dish at your dinner table. Imagine that!
 
Pair one with a mug for a super nice gift set!