Pokémon

The trick is to plan from the start by keeping some zigzagoons in your team for their pickups. They will sometimes grab rare candies as well as potions quite often, and they also are good HM... helpers. If you don't like to grind, you can "upgrade" them around Fourtree City, where they spawn at higher levels, improving the pickup items. Hold every rare candy you get until you reach the league and your pokes are leveled, so they grant more experience. Ik you are already past the point of this being helpful for your current run, but this is for the future or anyone else reading.