My graphic fuzz was missing them when I bought it, so I went to the local autoparts store and went to the “import” dress up aisle and bought some white vacuum caps, they sell them in multi-color packs usually, but the white ones worked fine for me.

I’m sure those listed at Mouser would work fine. Let us know if that’s the case.

As an alternative, you could pick up a can of neoprene rubber coating compound and make your own.