BabyDam Dam Wall Plug

The BabyDam Bathwater Barrier is a great way to save water and use your normal bathtub to wash your baby / toddler. It has a hole in its side and there's a plug for it. Unfortunately for us, our toddler's stashed the plugs somewhere in our house and we can't find them, so I sketched up a plug in Fusion 360 and printed it in flex.