Save The Lid!
I’m starting a ‘Save the Lid‘ campaign!
How many times have you put your class on lock down until the lid of the glue has been found? When a glue reaches the end of its life, before you throw it in the bin, save the lid! This way you will have a stash of lids to use when the other lids vanish under the desks! Oh and I do the same for whiteboard marker lids!