Wanted to hand wash our face masks but our bathroom sink did not have any stopper/plug to do so. So into fusion 360 I went to model one. This one has been working great for months. I printed in TPU for a good seal.

The dimensions I modeled it in are the bottom part of the plug has a diameter of 25mm and top part of 33mm. If this does not fit your sink you could probably scale it well in your slicer.