My first thought when I saw this was “FUN”! But then, I thought “Wouldn’t the paint ruin your lawn?”. Turns out you can use ground marking spray to prevent damaging your grass, and within a few weeks it grows out. Hadn’t thought of that! You could make the board as big as you’d like so that a lot of people could play at once. And, you can customize the size of the dots depending on the age of the players; smaller dots are better for little hands and feet. Get the full instructions here.