https://phys.org/news/2018-07-sky-limit-japan-firm-plaques.html

For about 30,000 yen ($270), newly-weds marrying at the hotel will be able to emboss their names and design elements on 16-by-eight-millimetre (one-fifth of a square inch) titanium plates that will be loaded onto a tiny satellite.

The satellite will be taken up to the International Space Station on a supply ship, and then released by astronauts.