If you want to pull a small trailer with your scooter, you can use this attachment as a hitch.
I couldn't test it myself because I don't have a trailer yet.
Achtung:
In Deutschland ist es leider nicht gestattet einen Anhänger hinter einem e-Scooter zu ziehen.
scooter_trailer:
https://www.thingiverse.com/thing:6239029
tool:
- drill bit 1,8mm
- tapper M10
ball joint (example):
https://www.amazon.de/Gelenkkopflager-Innengewinde-Kugelgelenk-Rechtsgewinde-Linksgewinde/dp/B09V1FZQWT/ref=sr_1_7?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&crid=3GO070EVQD1ZU&keywords=ball%2Bjoint&qid=1656302167&sprefix=ball%2Bjoint%2Caps%2C86&sr=8-7&th=1
License:
Creative Commons - Attribution - Non-Commercial - No Derivatives