I think there should be a way to use items in mass quantities.
Say when you click the item and that weirdy window pops up and you click 'Use Item'. Then if it's a food item, you can edit how much of the food you want to feed your creatu.
Or if it's the TU/Credit Tokens you can be like "Yes, I would like to exchange my 500 1 Million Tu Barter Token."
Fabulous.