Yes! A fan is great when you have a baby or small child. They want to hear the white noise that reminds them of their mother's heartbeat.
I remember my daughter would sometimes cry at naptime or bedtime, and our neighbor was in nursing school. Her bedroom was on the other side of the wall from my daughter's room. She would pat out a heartbeat sound onto the wall and it would soothe my daughter right to sleep. She apologized for it, but I thanked her, because I couldn't seem to console my daughter. The heartbeat was what soothed her.
A couple other ideas I just had: maybe a nightlight too. Nightlights all the way to the bathroom and back.
One thing my daughter really liked as a young child is that I set up a tent in her room, with a sleeping bag inside. She brought in her dollies and teddy bears, and favorite books. She slept all night in the tent. She actually went several months sleeping on the floor like that, but she didn't mind at all. She slept through the night and had imaginative fun in her tent. It was her little world. And I would often go in there with her to play or read, or even sleep some nights.
It was especially fun, because we put those glow in the dark star stickers on her ceiling, and there was a skylight in the tent, so she could lay in her sleeping bag and look up at the stars.
She also had a Glowworm toy. When she would hug it, its face would light up, and it would play soft music. She would hug it again and again, all night. That was lovely.