I've picked these up cheap on ebay

https://www.google.co.uk/search?q=airfix+1/32+scale+buildings&tbm=isch&tbo=u&source=univ&sa=X&ved=2ahUKEwia4YOMs8feAhVOecAKHa2RAv8QsAR6BAgFEAE&biw=1366&bih=613

They all work well, adding elevation, cover and theme (Jungle outpost great for Endor / Scariff / Kashakk), desert outpost also particularly useful. They actually work better in Legion scale than they do as 1/32.

Nice! Mind posting some pics with your legion minis once they arrive?