Another fun craft to try out... this one is more for the kiddos.
Using a dollar store shower curtain liner, this mom taped it to the floor and took directions from her kiddos as to where the roads should go. To expedite the process she taped two Sharpies to a plastic bottle so both lines would be drawn evenly spaced. Click on the Filth Wizardry link to learn more and to see more pics. She got the idea from My Little Gems and those pics are worth checking out, too.