I have a roost built into each corner of my pen. I have extended my pen twice so there are a bunch of corners and angles. I just took a 2x4 and screwed into onto the middle brace which makes like a triangle. I also have three different feeders that get moved around. Two of them are just round ground feeders that I put low plastic patio tables over to keep the rain off. They love to get up on the tables and the roosts. They also have one regular waterer and a low ground feeder with water. This gives them some options and they never run out. I also made a "box" (frame) out of leftover 2x6's that I filled with nice sand for a dusting box. They always get our leftovers from the night before spread around. Each of my boys take turns throwing them a couple cups of scratch when they get home from school. They also enjoy watching people and animals come in the yard.
I think my chickens are spoiled. When I get home from work I go straight out to the coop and they get so excited.