Crumble a stock cube into the stew and then add water - no dirty jug to wash.
Sellotape or one of those rolling clothes brushes which is sticky ahem H&M el cheapopicks up broken glass even from clothes.
WD40 cleans wax crayon marks.
Old rubber gloves can be cut up to make good rubber bands.
If you have glass shelves in your fridge, cover them in clingfilm, easier to whip off than clean.
Put a soluble aspirin in with your white wash.
Keep talc in the car when going to the beach, it gets sand iff sandy feet very easily and gently THIS WORKS, IT IS AMAZING!
To clean a showerhead: put vinegar in a plasric bag, tie bag around showerhead, leave overnight, rinse with water in the morning.
To clean containers stained with spagbol sauce, or the like: squeeze juice of a lemon into container and add a little baking soda. Rub mixture into stains. Leave overnight if necessary. Rinse with warm water.
Google 'cleaning with lemons', it's amazing!