Random use for a Pringles lid

Completely random discovery at unearthly o'clock with a sick child - Pringles lids fit on top of Ikea plastic glasses - good for snacks on the go or storage etc.
Sick child wondering what his mum is doing holding up a glass to the laptop.
His mum finding the whole thing funny in a week of Calpol and Nurofen.
I have been mostly at home all week with three sick children - not all together fortunately. Hopefully half term will be better and we can do some work on the new house...