Well first of all if we have items, there obviously needs to be something inside the admin cp to categorize them, and which shop they should go in.
Categories Ideas:
Decoration Items - Furniture like items that would go onto your "pet spotlight" it could have like specific things like wall paper, plants, couches, tables, e.c.t
Food Items - I think it would be a very neat idea if you feed your pet food, it would raise the level count by one.
Food Ingredients - Basically food ingredients where you use two or more of them and they make another food item [ ex. peanut butter, jelly, and bread make a peanut butter and jelly sandwhich]. These food items could raise your adoptables level count by five or so.
Promo Code Items - Items where you use it and it gives you a promo code when you use it.
Shop Keeper Ideas:
Basically it would have an image of the shop keeper, a description [ex. "ted the cook says 'Howdy!' "], the name of the shop, and of course all of he items.
I was thinking of something like this:
Also, when you click on the image of what you wanna buy, a pop up will say "Are you sure you wanna buy [food item] for [this much coins] ?"
with the options of yes or no.
I dunno all of my ideas.