I began by cutting a few bamboo skewers into a bunch of fence posts. Then I cut some strips of MDF to make bases from. I drilled holes to mount the posts. I then split each post and added a small bamboo wedge. After that I forced the bases to the ends of the posts, trimmed the excess, and sealed the whole works together with thin superglue. Here are the three sections I've got knocked together so far. Commissar for scale.
I'm going to wait to base these stands until I decide exactly what I'm going to do with the aforementioned Imperial Excavator terrain.
Until then, cheers.