These Star Wars stamps by Stefan van Zoggel help jump your mail into lightspeed. R2-D2 is the postmaster, and the stamp values are based on the Galactic Credit Standard. Unfortunately these stamps are not available to buy, but Van Zoggel may sell them together in poster form.
“The collision of the sci-fi futuristic world of Star Wars and the old, traditional world of postage stamps back in the day is what excited me about this project. It wouldn’t be as fun to just make droid holograms, or even stamps with randomStar Wars images on [them]. I like the fact that they look like they were used a century ago to send post to another planet.”