Baueda has a good variety of things. The BUAs in DBA are too small in area to use a model of what they really are – you end up with something representative instead.
City, smaller scale as suggested to show a or an aerial view or something like that. Maybe a Church, or famous building for that army. Which could be used as an Edifice. City gates (Baueda has some nice stuff)
Fort – single watchtower, part of stockade, maybe a couple of figures guarding something
Edifice – something cool from that civilization, not to scale, such as a pyramid
Hamlet. Outbuilding, some sheep, single house
For Hamlets and Edifices, whatever you have needs to be removable, leaving a completely flat base
For most people, a piece of felt works great, anything more is a bonus. Which reminds me, I really need some rivers
John