Reusable Silicone Bathtub Drain Stopper Plug Cover with Suction Cup (5in)

Found this useful as when we moved, there were no drain blocker, this works as expected

It's massive ! Doesn't fit at all a sink hole

Excellent. It does the job!

I moved into an apt where the bathtub lid was missing. I bought this as workaround and works like a charm. It sticks to the drainer with ease and without adding anything else. Just put it on top of the drainer and thats it. Excellent.