If you put those little silicone packets that you get in new purses, shoes, pill bottles.... that say "do not eat" they help to absorb the moisture and will greatly reduce the tarnishing, I keep a bunch of those in my drawers with my silver beads and findings and haven't and any problems since. Also, there are tarnish papers you can buy that you put small pieces in each bag with a finished piece. Or you can buy little jewelry bags that are made out of fabric that will prevent tarnish. Oh, or pieces of chalk, they also absorb moisture.
Well, there's my 2 cents!
Lois