Rubber bumper thingies. heh. I forget what they are called.
Like this: https://youtu.be/7rjXOoevQMk
Or Frugal Tesla Guy: https://youtu.be/mzRCdt_U6Do
You can see that many of these third parties literally used hockey pucks.
Pucks: https://www.amazon.com/dp/B07Q7435N2/
Bumpers: (4 Pack) https://www.amazon.com/dp/B07GBFD3SH/
You can (find) screw(s) yourself. 🤣 Joke!