Raisin as Bubble Maker
Original purpose: Making bran less boring.
Aha! Use: Restoring bubbles to Champagne that has lost most of its fizz. Drop a raisin into the open bottle a few minutes before pouring and any last gasps of carbon dioxide that are left in the wine will stick to the raisin's ridged surface, then release again as tiny bubbles.
Reward: A little more sparkle to lift your spirits.