400 pcs x 21mm Coin Capsules Holder Protect Coins Storage Organizer for Coin Collection Supplies - Coin Holders Display Cases for Collectors

Lot of people - me included - use coin capsules, yeah. You need 21mm exactly - smaller won't fit, larger will cause crowding on your board (21mm crowd just a little bit but it's perfectly manageable). For base + herb witches you'll need 400 capsules (well, less, but you can't order them in exact numbers). That'll run you about $20