I have the MyBaby sound spa portable. It's got 6 different sound options, 3 timer settings, and the reason I chose it was because you can skip the timer and have it play non-stop. We use it every single night, and also in the car on trips. It plugs into the wall or runs on batteries. We drive 6 hours to visit my husbands family and 6 hours home about once a month. We did that round trip twice on the same set of batteries.
We use an iPod with a small speaker. I have a nature app on there, but she prefers the kitchen faucet recording we made when she was a month old. If we go visiting, I just take the iPod with
Re: Favorite white noise machine