Multi-Level Ideas?

[Java]

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Hello! I just upgraded my Toad and Salamander to a flat 30 gallon tank and there's a lot of room.. so I was wanting to go all out.

I was curious if anyone had any ideas on cheap ways to do multi-levels. Hoping to do 3 or 4. Of course, they don't climb so no strenuous climbing but something like a hop/crawl up, etc. I've always done flat vivariums that are really pretty but nothing really out there. I was hoping that one of the levels could be something they crawl in- like a cave.

Any ideas on materials- even if it's just rocks, twigs, etc- is much appreciated. I have no means of building, etc.

Thanks!!

[Bombina Bob]

Hi Anna, Cork flats are one of my favorites for creating levels they
can be made into barriers and even piled on top of each other.