I keep it simple - I shake it off the plant directly into a tiny Mason Jar with a silicon dessicant pack taped to the side. Collect once per jar and put it in the fridge. The dessicant will take care of keeping things dry. It lasts 6 months to years this way.
When you use the pollen let the jar warm up to room temp for a few minutes before opening to prevent condensation. I dab the pollen with a paintbrush to apply to female flowers. Each time you remove the jar from the fridge it reduces the potency a little bit, usually after warming up & opening the jar a few times the pollen goes dead.
these are good dessicant packs - (sorry to post a link to Amazon/Bezos) - food grade so hopefully no toxic chems: