A cut potato dipped in salt will remove rust from metal.
A halved grapefruit dipped in salt will clean dirty baking trays and grill pans.
Tomato sauce left for 30 minutes on tarnished copper or steel pans will make them shine.
White bread is good for picking up small shards of broken glass or for cleaning the surface of paintings.
Half and half vinegar and water will clean the shower and to clean floors put a good glug of vinegar into plain warm water for mopping.