I tend to find soaked washcloths laid out works extremely well. Hope that helps!thanks everyone for the warm welcom. I am having issues raising the humidity in my home made (converted aquarium) incubator. I finally got the temp. stable but the humidity is sitting at 40%. I have a shallow bowl (with rocks in it) of water, added salt as per another thread, added a wet sponge as per another thread but that only got me to 40% (I was at 35%). Any suggestions? add more sponges? eggs don't arrive until tomorrow so I have some time to hopefully figure it out.