I have a couple of these for my grandson which work well:
http://www.amazon.com/Dreambaby-Str...S18I/ref=sr_1_1?ie=UTF8&qid=1306762608&sr=8-1
http://www.strollers.com/Dream-Baby-L230-Stroller-Fan-DRM1064.html
I ordered two of these a few months ago. Love them!
I had the dream baby one and my DS ripped off one of the foam blades. If you have an older child, one that can be trusted not to do that, or a younger baby who can't grab, than you will be fine.
If you are looking for another option, I have this one and its had worked out great.
http://www.amazon.com/Sunshine-Kids-Clip-Stroller-White/dp/B001N780AG/ref=cm_cr_pr_product_top
It gets terrible reviews on amazon, but I don't understand why. I think they might have re-designed it, because it provides decent air circulation and we haven't had any problem with it falling apart. I've even dropped it a few times and it still works.
we have a maclaren quest that does not have a front tray so i'm wondering if you think i could clip the fan to the side of the stroller and have it work.
http://www.amazon.com/O2-Cool-Flexi-Clip-Fan/dp/B000TK8YB8
Also, I didn't pay this much for them. Someone said they have them at CVS for under $10. We don't have a CVS near us so I cannot comment
I have a MacLaren double stroller. I ordered these because I plan on clipping them on the stroller hood and positioning them down. The blades are foam and seem to give off a fair breeze. The neck is bendable. One review said the neck seemed like "glass" and it could shatter easily when bent. I bought two of them and I've played with them in preparation for our trip. I don't know what they are talking about. They bend pretty easy and don't seem fragile. Our trip is next week so hopefully they work well!
http://www.amazon.com/O2-Cool-Flexi-Clip-Fan/dp/B000TK8YB8
Also, I didn't pay this much for them. Someone said they have them at CVS for under $10. We don't have a CVS near us so I cannot comment
I have used these fans for the past 3 years (same ones) I got them at CVS for $3.00 each...they are great on battery life and clip on easy to strollers.
Only thing to watch out for is getting it caught in longer hair
One review said the neck seemed like "glass" and it could shatter easily when bent. I bought two of them and I've played with them in preparation for our trip. I don't know what they are talking about.