Skyfield is very cool. For my wedding, I wanted to give my groomspeople personalised thank you gifts. The idea I came up with was to find or ask for precise dates significant to them each (their own anniversaries, birthdays, special events...) and convert that into an abstraction of the relative positions of the planets on that day using Skyfield: https://imgur.com/l7G0att (and with the moon's orbit if they wanted: https://imgur.com/CYqfLR4).

I then got them engraved onto cufflinks https://imgur.com/bhxJVGo

They were super happy with the result, and we all looked great on the day. I wonder if there's a market for these but it feels a little niche, I'm glad skyfield exists to help projects like these.