Iron Door - doorstop - plug

My puppy chews up the doorstop plug. So, now with the limited options that I have ;)
I couldn't think of anything but yet another excuse to design & print out a new plug!

I've also attached my FreeCAD project that has a spreadsheet component for users to customize the size of the plugs to suit their specific needs.

Note: The notch is needed to allow the air to escape out of the hole as you press-in the plug in place.