The pill organizer is great! I hadn't thought of that.
I have to say, though, rubber bands are not a good idea. I have a lot of older games that have marks and stains on the cards from rubber bands, and even bits of rubber that stuck on. These days I use hair bands - they're cheap from the drugstore. I think they have a rubber band inside, but the cloth on the outside protects the cards.
Hair bands work well, but they add a thickness to the deck which can be problematic if you're tight on space. I've started using 4"x5" plastic bags for all my cards. A thick deck of cards will often not fit into a 3"x4" bag, and a 4"x6" bag is excessively big, but a 4"x5" seems just right. I found some cheap ones online at the link below. Note: It's not prime eligible, but there is still FREE SHIPPING!