Re: Final resting place of unwanted leftover Christmas fruitcakes is also a possibility
I take *all* the fruitcakes out off The Regift Stream™.
I like to hike and mountain bike. Those are high-density, mostly indestructable fuel items.
Those, a tub of pseudo butter, apples, a salami (or similar meat product), block of cheese, sourdough bole', granola trail-mix, liter of water, liter of juice ... I'm solid for All Day.
I find when one bikes 50mi in a day, those little bastards are right welcome around second breakfast, lunch time, second snack, third snack, &c.