Basic house.

There is not a lot you can do with the outside, probably until Midnight.

Mostly decor items from quests and such. It could turn into a real gold sink, depending how fancy you want to get.

Yeah, we have basic orc hut. Hoping for some Troll love in the future. Want a Zandalari pyramid.

There are lots of interesting videos of people getting creative with basic parts, but I imagine it would be easy to burn through the building limits that way.

WoW Housing | How to Build Musical Instruments

And a lot of gold.