Not sure if you can buy these locally, but they are offered in various humidity levels. Not sure but they might help? humidity control packet
Read this article on curing and storing your buds. (Two important things that it doesn't talk about very much is that (1)They need to be kept in 100% darkness because light degrades THC. (2)The temperature can't fluctuate very much, or your risk of growing mold increases drastically because the humidity in the air in the jar will condensate on the buds, promoting mold growth.) Essentially, you want to keep them in the glass jars at around 60% humidity using these humidity control packets. Some people use humidors, but many people will say the flavor is much better when kept in glass jars vs a humidor. To be honest, you probably don't need a mini-fridge, just keep them in a cool dark place where the temperature doesn't fluctuate too much. The glass jars I linked to are air tight. The ones with the two-part lid (like I linked to) seal better than the one piece lids. Mold should only be a problem if the humidity in the jars stays too high for too long, or your temperature fluctuates rapidly.
then get like 72%. maintaining and controlling the humidity properly will extend the life of the bud, and increase the terpene flavor