I'm replacing the floor in one of my bathrooms and need to have the toilet
removed for several days while I remove the current subfloor, replace it,
tile, and grout. Everything I've read says to block the toilet drain with a
rag. We've done that as a temporary solution when running back and forth to
the store for extra parts when replacing a toilet, but leaving a rag
blocking the drain for several days seems like an invitation for sewer gas
to infiltrate my house, or for me to accidentally block the drain with the
rag. (Besides which, it will drive my husband crazy because he will be
*sure* I will accidentally drop something down the drain.) I assume I can
buy some sort of cap to temporarily block the drain, but before I go to the
plumbing supply store, can somebody give me the correct name for the part so
I know what to ask for?

Thanks.