For the PP, the Pokemon games had the "Ether" items that'd restore PP for move(s).
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Oh yeah I want to add that! I plan on having PP management be a lot more important in this game than Pokémon (since outside the elite four you can always run to heal at no penalty) , but early game it's really brutal. So some items like that really would help to get people past early game where they'll be able to catch a collection of critters!