Blue plastice box of labels, roll inside is full,
You pull out a label, write what it is, and date, and attach to Tupperware container.
Then place in freezer or fridge. You don't have to open the cpontainer to see what's inside.
Blue box is 2 1/2 by 2 1/2.
Yeah, your own pen, paper, and tape would do, but Tupperware never missed a chance to sell you something.