This would be a lawn aerator I made out of a PVC tube filled with sand, some screws, some scrap wood, and some electrical conduit. Works like a charm! :)
Picture of Lawn Aerator
Aerating Lawns: Cheap Lawn Aeration: Make a Lawn Aerator
DIY Lawn aerator
DIY: homemade lawn aerating shoes - Perfect for your yard!
Learn about lawn aeration, including the best manual lawn aerators, lawn aerator machines, and if lawn aerator shoes are worth the money.
DIY: homemade lawn aerating shoes - Capturing Joy with Kristen Duke