I doubt theyll get hurt on the tooth picks, after a while in the tank they go all filmsy so if they wer to somehow get ontop of them they would probably just bend...
For now im just using a regular cheap 8cm pc fan hanging at the top right hand corner of the front glass...
I got an old Nokia phone charger and cut the end off, I then wound the wires together from the fan and the charger and voila...
As the charger is only 5v its farely slow, and you can barely feel the breeze coming off it, but when the humidifer is on you can see it more than suffices, because it wooshes the fog all over the place.
This is just a temporary set up, to keep my ferns in good health until I get a proper fan controller, I would say you could try something similar to this becauses its very simple to do, but I myself wouldnt use this if i had any frogs in the tank even with a little mesh cage built around it like you see alot on here.
You should take a look at this if you havent already...
55 gallon journal
Its a great thread, and the internal air re-circ system that he came up with is genius in my opinion and very easy to make...
You could try somethint similar to this..
Hope im helping a little...
Richie