Southern Brown Tree Frog, recommended terrarium setup?

[Amphigorey]

I know they're not exactly the most sought after pet amphibians. But what type of setup would you recommend for an Australian Southern Brown Tree Frog?
He or she is currently around 4cm from nose to bottom.
At the moment it's living in a tubrrarium (y'know, the plastic box with the hole in the lid etc.) with a bunch of stones and enough water to sit in with its head poking out, some lime tree branches (because of the smooth leaves and convenient shape of the branch to give it something to climb or hide in) and a handful of grass (just to give it something softer to walk across). I'm spritzing the inside of the container ever so often to keep it moist. Not so moist that it creates condensation though.
I've had a read through a lot of terrarium setups for different types of frogs on here already, so I get the gist of it all.

I would just like to know the basic recommendations. Fairly sure this type of frog is easy to please.
Also, what type of food? Currently only been able to catch small locusts.