I finally did find these in a hardware store. Sure enough, they were called "china markers" instead.
This is the BEST. I can write on my Tupperware lids (date, contents) as easily as I can write on the crock pot (time). The marking substance has a tendency to melt onto the crock; my favorite recipe is done in two stages, so when I want to write a time, the crock is already very warm. But it's still perfectly readable if I'm careful.
Best of all, if I forget to take the marking off, the dishwasher leaves no trace of it.
[edit for accuracy: Dishwasher cleans the crock spotlessly, but not the plastic. Oh well.]
CJ and CJ give this idea two thumbs up.
This is the BEST. I can write on my Tupperware lids (date, contents) as easily as I can write on the crock pot (time). The marking substance has a tendency to melt onto the crock; my favorite recipe is done in two stages, so when I want to write a time, the crock is already very warm. But it's still perfectly readable if I'm careful.
Best of all, if I forget to take the marking off, the dishwasher leaves no trace of it.
[edit for accuracy: Dishwasher cleans the crock spotlessly, but not the plastic. Oh well.]
CJ and CJ give this idea two thumbs up.