Anyway. Etsy seller Back to Zero has the following stamps available: the Jedi symbol, the Rebel Alliance symbol, Darth Vader, R2-D2, stormtrooper, the Galactic Senate symbol, and the Imperial crest (which they're calling the Galactic Republic symbol, but we'll give them a pass). They look detailed and oh so pretty:
Shop for Star Wars wax seal stamps at Back to Zero. You can choose the color of the handle and whether you want to bundle the wax. And yes, you'll find other nerdy designs like a Batman wax seal stamp in the listings. Keep in mind that turnaround time is about four weeks; plan accordingly if you want to use these for invitations for an event.