After procrastinating for what seems like months (it probably was), I finally went to Home Depot and bought some 1/8-inch hardboard (aka Masonite). Not knowing exactly what it was I wanted, I sat down with a printout of my trackplan, drew out some roads by hand, and then rounded them off to the nearest foot. A six-inch wide road makes a believable road in either O or S scale (parking on one side of the street in O, both sides of the street in S). So then I mapped out what I needed and had hardboard panels cut to fit the sections I mapped out. I'll be able to do basic scenery on the panels (sidewalks and grass), then lift up the track and lay them into place on the layout. I'll put road material (textured wallpaper in my case, since I want cobblestone streets) down in the gaps in between. And it just so happens that 1/8 inch will make a believable curb in O or S scale. It's a little tall (6 scale inches), but the road material will chew up some of that. Overstating the detail makes it a little easier to notice that it's there. Or at least that's what I'm going to tell myself. This method lets me cut the job down into manageable pieces--most of them are 6 square feet or smaller. There's no way I could do the whole 8x8 in a single weekend (I've tried unsuccessfully several times). But now I have 9 boards to do, so even if all I can manage is one board per weekend, I'll still have it done in a couple of months. Since I'm doing minimal scenery, a couple of weeks is probably realistic. Oh, and my total bill? About $14. That's $6 each for the two 4x8 hardboard sheets, and 9 cuts (4 are free).