Lens Caps?

[EQTrax]

I got 3 low light b/w camera's used but I didn't realize they didn't have their lens caps for sticking them outdoors.  I havent had much luck finding them for sale anywhere, anyone have some tips on homemade lens cap methods?

Cams are XX20A

[Tuicemen]

I've ran a X10 wired cam out side for 10years without the lens cap.
But if you need or want them caped try the clear plastic caps from hair spray bottles (I've used these in the past)
Some create a slight fuzzy edge on the pic and distort the outer edges of the pic but not bad!