Using empty disposable coke/Pepsi bottles to store water and keeping it in refrigerator.
using used ice cream packing/tubs to store food in freezer/refrigerator.
applying "tarka" to few days old food and making it fresh for lunch or dinner.
Mom hiding snack items somewhere in refrigerator/freezer/ cabinets which is intended for guests only , and we try to figure out where it's hidden and finding and eating it. And when guests arrives , mom getting mad that " yeh mehmanoon" Kay leay thaa..
filling shampoo bottle with water mixing it so that can take shower. Slight layer of shampoo in the bottle.
same mixing water in ketchup bottle to make it more.
edit: some more
Keeping safe the string (tied around) the one which comes with "methae ka daba"..
our loving moms and loving sisters keeping "jootay kay dabbay" to keep their makeup ka saman ya everyday wearable jewelry.