After my seeds are completely dry, I pack them in baggies (for small amounts) or empty prescription bottles I get from a heart patient friend of mine (large amounts) and store them in the fruit drawer in the fridge.

I store mine in #0 craft envelopes after they are dry. Paper or "glassine" (looks like envelopes made of wax paper) helps keep the seeds dry, or continue to dry if you didn't dry them enough. Then you should store them somewhere dry and cool. Fridge would be good. A few seeds require special storage conditions, though, so keep an eye for those (eg. helleborus, trillium, corydalis).

thank-you very much for your great ideas! lisa