Fanny pack is $10 on Amazon and so is the patch ($20 total).
Fanny pack is adjustable and fits a lot of stuff. I recommend this DIY project for Harry Potter fans in need of a cute fanny pack. I used it for my trip to Universal Orlando and it was perfect.
Link to purchase: https://www.amazon.com/shop/caylinjimenez?listId=1FS96Z5FNNECU