My latest vivarium is a home made one, built out of recycled 5mm thick plate glass. The dimensions are 41x42x67cm (approx 16.1x16.5x26.4") for ~115 L (approx 30.5 US gallons). It has a front opening door attached with a piano hinge (affixed with silicone) and a sliding bolt to keep it shut (also siliconed on). There's a removable large top vent made from some kind of stainless steel sheet metal grill that's strong enough to support the weight of curious felines (it's been well tested). Front view:
There's a 5cm layer of hydroton followed by a layer of landscape fabric, followed by 5 to 10cm of substrate (leaf hummus/topsoil from chemical free area mixed with some peat and playsand for drainage), followed by some magnolia leaf litter and well stocked with springtails. There's a corner where the frogs have access to the drainage layer to soak in. A barrier of river rocks and driftwood help keep the substrate out of the pool. This arrangement has worked well for a water area for me before, it will turn a little brown from running through the substrate but it makes it a breeze to remove excess water when needed. View of the pond:
There are 5 shelf mushrooms siliconed high up as perches, and a grapevine twisting around the enclosure. There's no background- instead I'm trying to have some neon pothos, Epipremnum pinnatum 'Neon', (a slower growing and smaller version of the usual pothos) and some Philodendron cordatum (the standard philodendron vine) climb the glass at the back for some cover. This will take some time but I think it will give a nice open feel while still providing ample cover for the occupants. View from above:
There is an upright piece of driftwood near the back, but I'm mostly relying on the plants to provide some physical structure. There's a Ficus elastica variegata, a couple Peperomia obtusifolia and a couple of Peperomia obtusifolia varietaga. These are all sturdy plants that fill a vertical space nicely. There's also a very slow growing Dracaena deremensis 'Janet Craig compacta' in the front left and a Dracaena godseffiana that I hope will decide to fill some of the space over the pond area. I like the look of the ficus and varigated peperomia together:
It still has some growing to do before I'm going to move anything into it. The ficus should reach the top given time and the peperomias should come close before they start trying to collapse under their own weight. The vines will of course be all over the place given time. I think I got carried away and overplanted it, but I'm not afraid to mercilessly hack down plants if it starts to feel overcrowded. The intended occupants are either my H. cinerea or a couple of my H. versicolor, I still haven't decided which.