I made this kickstand foot for my bike which is typically parked in my apartment. My goal was to try to spread out the weight on my carpet with an attachment to the kickstand so I don't need to remember to move it with my bike (like a board). I printed mine in PLA for use around home but it would be better to print this in a tougher or more flexible material if you plan to use it outdoors. 

Center hole is 12.8mm. Included fusion file for easy modification.