Recycle Boxes have been removed from Rust.
Recycle Boxes were very similar to Research Kits since they required both the same resources and follow the same steps. They were used to research various items found in the world. You had to have the item in order to research how to create it. The Recycle Box worked exactly like the usage of Research Kits does now, other than requiring paper. Before you could start to research you needed to have a piece of paper with you because 1 research required 1 paper.