WD-40 as Crayon Cleanup
To remove crayon marks apply just a small amount to almost any surface (plastic, metal, TV screens, freshly painted walls) and rub away with a clean cloth.
Mayonnaise as Adhesive Remover
Banish stickers from mirrors, glass, and bumpers by applying a generous helping of mayo to persistent adhesives. Use a flexible putty knife to help coax them off.