I was thinking bonsai would make a nice addition to the "house"
No bonsai yet but I've a nice collection of small pots! (Proper bonsai)
Fish tanks=A good humidity umbrella I think!
(My first efforts failed) rhododendron got diseased, my firs failed, I forget what the last one was called but I killed it, tree keeping is harder than fish keeping it seems?
Or bonsai is less than straightforward.
My next two trials are outside toughing up over summer, they get harder bark outside, more real looking. Otherwise they stay looking like saplings with soft bark. Hopefully these ones work out ok. These are rescued trees from a garden path re-design. One is holly, the other is unknown maybe elder, but they are trees.
Feeding trees is a strange thing to me!
Anything is possible. I like the idea of flowing internal and external design. You have the parts, get building! If it is safe it is good!