I just thought of this today but I think this would really be a cool feature to the shop. You can sell snowballs. Although they are very easily obtainable you can sell them for very cheap like 10 cents or 15 cents each, or cheaper whatever y'all prefer. Plus since they stack in groups of 16 you can't have that much at one time. This is just a thought but I think it'd be a really cool feature to the shops.