THE YELLOW BRICK ROAD
The yellow brick road is cut from carpet padding or carpet. You can probably get remnants for free from the carpet store either by asking or just dumpster diving. The padding cuts easily with a good pair of scissors. Carpeting will need a razor cutter or sharp knife.
Cut it into road lengths that you can roll up and carry and store.
On a sunny, not windy day, I laid it out on a big lawn, foam side up, netting side down, and used a tray and roller to paint it all yellow. It will use a lot of paint. Start this project in the morning with at least 10 hours of warm sunshine ahead of you.
While it dried, I cut about 8 to 12 brick shapes out of cardboard. The bigger they are, the less work it is.
Then on the dried yellow road I laid the bricks out at one end with an inch or so between them, and used a can of black spray paint to paint around them. When you lift the cardboard squares you have nice yellow bricks left behind.
Plan your pattern of brickwork before you start. Just lay them out and look at them.
Leave the last cardboard bricks on as you pick up the earlier ones and lay them down into the next section -- the last ones will protect those bricks from overspray as you spray the next batch. So if you have 3 rows of 4 bricks, you'll leave the most recent row as you put down the next two rows of bricks.
I put it on grass because you will have paint overspray. So a parking lot or garage floor will get paint on it. Grass will eventually get cut.
Actually I paid my 9 & 12 year old sons to do all this and they did it pretty well with not much supervision and correction by me. You want to warn them not to breathe the paint spray. Paint spray is another reason to do it outside.
And they might want to hold down the cardboard bricks while spraying them to keep them from moving or the paint blowing under. I recommend wearing an old longsleeved paint shirt and a plastic or old glove to hold it down or a spatula or stick.