toad tub with black landscape edging.
With wire lid off.
Bolted on with nuts, washers and bolts. I joined the landscape edging ends together at the top by inserting a length of half inch pvc irrigation tubing into the top bead.
A bead of weatherstripping to close tiny gap some of them thought interesting enough to try to squeeze through. Not a chance with these big fatties but I didn't want to take a chance someone would get his head stuck.
This a a funky but practical solution for my ten California toads. Now I can put deeper soil and yet still provide some head space. With deeper soil they can overwinter in the greenhouse. I have an indoor outdoor thermometer with the outdoor probe inserted into the soil to monitor the temperature. They have an "organic" odor which is fine outside but in the house might not be so pleasant., so I am hoping they can live in my greenhouse. If it gets too cold I will of course bring them in and put them back in their original cement mixing tub, which is smaller.