We have a carved branch ladder, a branch roost across part of the run, an apple crate, and we just tore apart the last of the bale of alfalfa for them to scratch in. Occasionally I put a flock block in the run for them to peck at for variety, and I often toss them treats, so they will have to scratch and look for them. Baby spinach leaves, raisins and black oil sunflower seeds are a few of the treats we give. When we mow the lawn, we also put the first few bags of cut grass in the run for them to scratch through. They love it!