For that kind of stuff, I go to the nearest parts store and look for something roughly equivalent from their rack and make it work. You can also try this: https://www.3geez.com/forum/interior-exterior-care/62705-holy-grail-honda-fasteners-trim.html and let us know if it still works.
"I like to take hammers, and just break stuff, just break stuff." - Beavis
1989 Honda Accord LX-i Coupe, 220k miles, MT swap, rear disc swap
Shop manual downloads available here: CLICK TO VIEW