1. Polish cutlery: Give metal cutlery a new shine and remove rust by scrubbing with onion slices or a paste of crushed onion and water.

2. Clean gunky pots: Scrub a burned or gunky pot with half an onion, and then let it soak in the onion juice. Wash as usual and the mess comes up easily.

3. Shine grills: Heat the grill, then spear a half onion with a fork and glide it over the grates to remove grease and charred bits of food.

4. Absorb paint smells: Place a bowl of sliced onions and water in a freshly painted room to absorb the stinky odor.