I like the Snooz white noise sound machine. It’s not the smallest, but it’s light and I like it a lot in general. For something cheaper and smaller, try the Yogasleep by Marpac. I have the original Marpac Dohm which is bulky but works well. I’m guessing this smaller one is good too. Both Amazon links below. Good luck!
SNOOZ White Noise Sound Machine - Real Fan Inside for Non-Looping White Noise Sounds - App-Based Remote Control, Sleep Timer, and Night Light - Cloud smile.amazon.com/dp/B076F2J...
Yogasleep Hushh Portable White Noise Machine for Baby | 3 Soothing, Natural Sounds with Volume Control | Compact for On-the-Go Use & Travel | USB Rechargeable | Baby-Safe Clip & Child Lock smile.amazon.com/dp/B01D50R...
So funny, I literally was just looking at sound machines online yesterday! I put this one in my Amazon cart. We have had it before and I think we left it somewhere. It's nice because it can be battery-operated so no need to travel with cords.
This is the one we have used for 11 years and we love it we have 3 of them and they travel really well because they are not too big! They come with us and the kids everywhere.freshchalk.com/p/homedics-w...