Off the top of my head :
I scrunch up a piece of parchment paper under the tap water and squeeze the water out before using it to line up cake and brownie tins so that it’ll stick to the sides better. The water will evaporate during the baking process and doesn’t affect the batter.
I put thick slices of day old bread under my chicken before roasting, they absorb the chicken juice so that the underside is not soggy + the bread edges become so crispy that I just nibble on them like roasted chicken flavored soaked crouton lol
Edit : lousy grammar