2" or 4" Foam (Home Depot, Lows Etc will have 4x8 sheet for around $20.00 for 4"), WS Foam road bed, you can buy it in sheets for the yard too. You can then put it on any table surface you want and EASILY move it later on. Gluing the track down works good too, you can easily pull the track up. Also, you can use regular straight pins in foam and try multiples of layouts before deciding on a finial design. Draw using a sharpie on the foam remove the track and lay the road bed. I did 15" radius curves with it. No biggy. Simply put the glue down.. lay out the roadbed, then put your track back on top and you can adjust the roadbed UNDER the track and pin it down for finial setting. Worked GREAT for me!