I have over 100 handmade foam tombstones in my yard. This one is my favorite. : r/halloween
These gravestones are all carved and Drylok'd. Using a concrete sealer like drylok gives the foam board a concrete look and feel and gives the acrylic paint a great surface to adhere
DIY Halloween Tombstone Decorations | HGTV
How to Make Homemade Foam Tombstones - Really Into This
How to make Tombstones 💀 DIY Halloween Props - YouTube
17” Halloween Foam Graveyard Tombstone, 6 Pack Headstone and Bonus Metal Stakes | eBay