So I got some bamboo placemats (~$2 each) and find they make great base material for anything using wooden planks. Each piece of bamboo is 5mm wide. That's a little thin for 1/6 flooring but I don't care, it looks good to me.
I cut through the placemat backing with an Xacto knife, then I burnt off the excess backing.
I glued the bamboo pieces down on to scuffed CDs and trimmed away the excess. The glue warped the CDs after it dried so I ended up cracking the CDs in 2 spots to relieve the warping.
I also glued the bamboo to particle board and the glue did not warp the board. I assume both woods absorbed the glue evenly whereas a CD won't absorb any glue.
Since its real wood, you can weather it easily with paint, spices, pastels, and scuff it up with steel wool or sandpaper.
Just some ideas for cheap bases and diorama parts.