Review on 💨 TYZU 5 Inch Clip on Fan: USB Powered Desk & Stroller Fan with 3 Speeds - Black by Danielle Jenkins

That's a great idea. However, it doesn't come with a rechargeable battery and it's very thin plastic. If you're using a stroller, expect children to be around...if they lightly nudge it, it can fall and the plastic will snap in half if it hits the ground. I bought 4 fans and 2 of them broke within the first 2 weeks, either because they rotated too far to face the other way or because they were dropped. I have to take portable phone batteries to connect fans to them or they won't work.