Crab pots are floated on the shores of bodies of water (lakes, ponds, rivers, or the ocean) and primed with Bait in order to catch fish. Players with the Luremaster profession don't need to refill the pots with bait.
They are very useful for increasing your fishing level without actually having to fish. Fish caught with Crab Pots (Lobsters, crabs, etc.) also count towards the Mother Catch Achievement.
The Recycling Machine is a crafted item that is used to turn trash (aside from the Joja Cola and Rotten Plant) into useful items. It takes 60m (1h) to process items.[1] The recipe is earned at Fishing level 4.