I have been making some terrain, principally to play Rangers of Shadow Deap, but suitable for other fantasy settings too (Middle Earth and Age of Sigma spring to mind). I began with some scatter terrain suggested in the first Rangers of Shadow Deep mission. I needed some rocky outcrops and some patches of dense brambles.
These were made using old CDs as bases, following a tutorial by Mel the Terrain Tutor (LINK). the brambles were made from some dried plant stuff I bought from the flower arranging section of Hobbycraft. The rocks were made from...well rock actually. Just a few nice shapes stones and gravel from the garden.
I suspect these pieces will see a lot of action as they are generic enough to be used everywhere from the steamy jungles of the Congo to the rural 'idle' of VBCW shropshire.