As "they" say "necessity is the mother of invention".

Years ago I was given an axoltl... but it wasn't... it was a tiger salamander juevinal. When it morphed I built it a terrarium using hamster tubes to create tunnels under the surface. Silly, but he enjoyed it. At times it looked like a wack a mole game, never knowing from which hole he was going to emerge.

I am in the process of setting up yet another terrarium/vivarium out of a 20 gallon bowl of all things. Because of the shape, completely round (30" wide and high) with an 8 inch opening, I still have not yet decided what to do with it: vivarium with pond, creek or waterfall or terrarium without moving water but with hills and valleys. I have the bits to do either just cant decide.... Evenutally all manner of critter could reside in it and even without a cover I don't beleive anything but tree frogs and the like could climb up and out, the sides are too steep and curl towards the middle to the small 8" opening.

Any suggestions?