Even if you don’t aim to be a collector, having a collection of small bags in varying sizes and attributes is going to end up useful if you at all become interested in learning more methods of divination or trying out a few new decks. A lot of decks aren’t sold with a box or bag now and you’ll have to keep those cards bundled up somehow. Maybe you end up using dice to do numerology–a tiny bag will be real handy for that. Collecting casting charms? Bag. Cute new deck of playing cards has a crappy box that’s already falling apart? There’s a bag for that.
So the best thing to do is hang on to every bag you find that can cinch shut, keep cards or charms protected, and look distinct from other bags so you can tell from a glance which one holds which bag. And then you’re going to want to make sure to hang on to certain types of patterns and designs to match certain deck themes or spiritual symbolism. And then you’re just going to be sleeping on a big pile of bags, and it will be awesome. If your bags get out of control always remember that you can fix that by collecting bigger bags.
Great advice. This is how I keep my decks. And to you fellow tabletop RPG fans, a large size dice bag is exactly what you are looking for. I pick up a half dozen every year at GenCon for cheap. So go check out sites that sell products for RPGs or go to etsy and search for “dice bag” if you want to help a small business and get something nice.