I use a glass. Not a large of course, won't fit. But one of those half sized ones. Fits right under the middle of the heating elements. It's tall enough for sure that the babies can't get in. I can do this when I don't have a lot of eggs in for lock down. Doesn't really take up much room though. Then I spread a long brand new dish towel across the back. I don't use the wells. I don't like what the water does to the foam. Plus, if any blood or goop gets into the wells during hatching, it sets right in there..harder to get clean. I do use the plastic kitchen cabinet liners to help keep the bator clean, but sometimes goop gets through.Just an FYI if you are using a Little Giant Incubator.
I was trying to find something to hold water (alot of water, not take up too much room) during lockdown. And something the chicks could not get into after they hatch.
Husband offered be a Plastic Mud Pan (used for holding the mud when installing sheet rock).
Fits perfectly under the heating coil and little ones can not get in.
http://www.lowes.com/pd_243939-5183...n&pl=1¤tURL=?Ntt=drywall+pan&facetInfo=