Picked up an ancient rangefinder cheap and still need to make new shutter curtains.

I could use a UV or skylight filter for a 34mm filter ring.

I also need a yellow and (what else do you have) in 40mm, as I have a step up ring and the other lens uses a 40mm.

Would prefer chrome over black, but that is just a cosmetic silliness.

So what do you have on the cheap?

It would be super neat if it said Canon on it, but I really dont care, not a collector.