Between manual gathering and Litter specialists, keeping Nonburnable Garbage stocked isn't hard. The Litter route is less effort once you've assigned the right Pokemon to the job.

Debris found on Bleak Beach

Raw Material
ExploreBleak Beach / Recyclable
Bleak Beach
LitterPoison Pokemon Litter Drop
Litter specialty Bleak Beach
GrimerLitterMukLitterGarbodorLitter

Gathering Nonburnable Garbage feeds into 1 recipe that habitats like Trash Collection Site, Trash Disposal Site, and Trash Site TV depend on. Each recipe you craft brings you closer to attracting Pokemon like Koffing, Weezing, Trubbish and 4 more.

You can craft Garbage bags, Scrap Cube using Nonburnable Garbage. These 2 recipes are mostly Furniture and Blocks items that help fill out your island.

2 recipes
Garbage bagsFurniture
Nonburnable Garbagex1
Scrap CubeBlocks
Nonburnable Garbagex1Iron Orex1›Copper Orex1›