I really do love making bases. It’s a fun little vignette for your figures and you can choose to take as much artistic license as you’d like. You can do so much more than just applying globs of glue and sand.
Here is one of my favorite techniques that looks great yet is easy enough for army building. I start with a ⅛-inch thick sheet of cork from a craft store. Next, I simply tear off bits with my fingers or a tweezer and then attach them to my base. I personally like to use several small pieces for each base and then fill the cracks and crevices with sand and small stones. The end result is a base reminiscent of a scarred landscape like the desert. The best part is that the base is entirely level on top making attachment of the figure absolutely trivial. I tend to pin the model to the base but a dollop of a strong adhesive like epoxy will work, too.
Shown above are a set of bases for my Ork army. I chose muted colors to ensure the model on top will be the central focus. I painted the entire surface Olive Skin from Reaper, followed by Blacked-Brown along on the sides of the cork. I later applied a brown ink wash and drybrushed with Terran Khaki and Yellowed Bone. I stippled a bit of Palomino Gold in there, too, but the effect is somewhat lost under the drybrushing. The edge of the base is Olive Drab.
