Heyho :)
Some time ago I designed some simple beads for a friends pocket knife.
I also use these with my outdoor knives.
The design is nothing special but you have some choice and it serves its purpose :)
You can print the parts very well with GITD filament or other pop colours. You can let your taste run wild :)
My tip: Just try out the possibilities of your slicer! Functions like Fuzzy Skin also look great. Or make the infill a little more visible!es.
Have fun and keep printin!