For a few cents more you could buy the fancier, more complex version. It's a little crazy though.
SOMEBODY'S not pulling their weight around here. Soap, I'm looking at you.
From the submitter:
Pipe from shower drain broke. 25' of sump pump tubing+zip ties+duct tape=PROBLEM SOLVED!
Submitter TurboJens explains this fix: The fill valve split in half and the floater does not cut off the water supply. The towel keeps the water inside and the wrench keeps it from overflowing.