So here are a few from my painted collection so far. All of these are from 1980s Citadel miniatures ranges.
Since I was collecting vintage figures, I decided to got vintage with the basing style. Hex bases where originally released with citadel figures, but quickly died off before the 1990s brave new world. You will find Talisman figures originally shipped with Hex bases- if your going for authentic.
The simple mossy look is just sand and pva glue mixed into a concrete, and then a fine layer superglued to the top for roughness. The colors and ornaments are inspired by the bases Kev 'Goblin master' Adams- check Heroes for Wargames for lots of examples of his great stuff.