Coleman cooler drain plug

The plug on my Coleman chest cooler broke, and the few that I found on Thingiverse didn't fit my cooler, so I made this one. It snaps over the cooler drain nipple quite firmly, and you can add a rubber o-ring for an even better seal. I designed it in OpenSCAD with initialization variables that you can easily tweak if your cooler's nipple has different dimensions, or if you just want to tweak the fit.