I was gonna get a 4x8 sheet of plywood and a bunch of 4x8 sheets of pink foam. Glue the first layer of foam draw up a basic course and add some blocks like in this link
http://bcoleary.home.att.net/Terrain.html The only difference is that I will make more of rolling hills on one side and add alot of white glue and real sand, then on the other half change over to an jungle type off road scene. or just make a bunch of hills like in this link
http://www.fortunecity.com/underworl...ll_making.html and throw em on my carpet for a free run.