This is an aluminum sign, 10" in diameter, that you can mount on a stake for your lawn. There are two holes in the sign where you can use screws to mount the sign.
 
We know that not mowing your lawn in the month of May helps the pollinators and other beneficial insects by providing food and shelter as they emerge in the spring. This sign will let your neighbors know your plans and maybe keep your neighbors from offering to mow your lawn!  Also you're teaching them about the importance of creating habitat.