I have an old (old, old) glock that could use some felt and wire, but I don't know what to get or where to source it. What I've found seems to be very proprietary to Sonor, Peripole, etc and it's mostly for elementary classroom instruments.

What can I use to clean this instrument up a little? Fabric store felt cut and poked? Fishing line? I feel kinda dumb not being able to find this info.