Well I was making some hides for the snakes at work and I want to know what you guys think.
For the 20"/24": I have two 5" black plastic bowl thing that are 1 1/2" deep. I cut one hole in the front. Two for the 20" and two for the 24". Hows that sound?
Now for the one I'm worried about, too small?
For the (two) 3 footers: A 10" box, 3" deep. Too small? They curl up pretty small.