I've seen a thing where they cut them a certain way and turn them half inside out (one side) to make a giant urn. I don't know.... Might look cool, or might look redneck!
I got 2 tractor tires for backside of property. Filled them w/manure, then topsoil. Planted strawberries in them. Then my wife after strawberries died down planted gourds in them w/out my knowledge or permission.
Ground settled in them, so I have to add more. If I can find some mint, will start that in there. Easy to sit on while picking.
My dh got me a semi truck tire and rim.Was going to use the rim for a fire pit,but it was painted.I ended up filling them with soil by a swing/arbor,and put in some grape plants.The area floods so I needed a raised bed,and the plants get plenty of water from the soil.