During the summer when it was very hot, we put a fan in the baby's room (not directly aiming at him) and we found the white noise from it really helped improve his sleep. We're still putting the fan on at night for the white noise but ideally I'd like to replace it with something, and I was just wondering what other people used for white noise. I'm considering something like a toniebox for the future, but do they also play white noise? I'd be grateful for any recommendations please. My son is 18 months old. Thanks.