The board you see here demonstrates a couple of things that I like to promote in designing game boards.
The first is versatility. The actual board here will represent Mars for a Fantastic Worlds game at Fall In, but was originally my Gobi Desert board from the Dragon Bones release. I'll also be making some river pieces to use it as a jungle board as well (see next point below).
How do you put jungle on a desert board? Well, in this case, I created some water patches from Vallejo water effects (spread it with some blue paint on a sheet of wax paper and then peeled it off) and the dry river beds of the Gobi Desert are now Martian Canals during the dry season. Like the Nile in Egypt, the vegetation grows along the water's edge even though there is desert all around. It's a nice "pulp" answer to something that make not make logical sense.
The silver pylons scattered around the board are my Encounter Markers. I've been asked by several people what I do for Encounter Markers. These are board game pieces but they looked particularly "sci fi" to me so I sprayed them silver and voila! Instant Encounter Markers.
Use whatever you have lying about. The Rocket ship is an old clock that I got from my father-in-law. It didn't work, so I covered up the hole in the back and sprayed the thing silver.
Finally, aquarium pieces. Any of the vegetation, not made by Grimm, is just aquarium plants stuck on metal washers or old CDs. And the cave and weird cliff are more aquarium pieces that have been re-painted.