If you want a do it yourself labyrinth you can make one instead of trying to find one ready made. If you look up the pattern for a labyrinth on line you can learn how to draw one of the ancient classical ones, starting on paper, and then get a box of sidewalk chalk and find a large parking lot. I’ve done labyrinths this way, and also done them in the sand on beaches using a stick or a shell to scrape out the walls. This works best when the tide is going out and you have smooth very wet sand.

You need a whole package of sidewalk chalk if you draw one in a parking lot, and either way it involves a lot of bending over so it can get hard on the back.