Recycle

Recycle is held by the Trubbish line. At a recycling station, these Pokémon convert otherwise useless trash into useful materials: Nonburnable Glass becomes Iron Ore, and Wastepaper becomes Paper.

Paper in particular is a late-unlock material needed for books, blueprints, and decorative items, so Recycle is usually the fastest way to keep a steady supply.

Recycle also nudges you to actually pick up litter around the map — what used to clutter your pockets becomes valuable raw input.