One is (I think) an old reading pillow my mom made ages ago, and the other is a regular pillow. And that's all I need, not counting the occasional cat (and that's usually just for a few seconds).
When I was a little kid I would sleep with a bunch of stuffed animals, pillows, and blankets because I would stay up late and make forts. Now I only sleep with one pillow because I have two dogs that sleep on my bed and they take up a lot of space.
I sleep with two. I also often like to have rolled-up blankets, stuffed animals, rice bags etc as like, arm rests and things for me to put my arms around while I sleep (and as comfy things to have my back against if I'm sleeping on my side).