A glumbuzzle is a small, inexplicable object found in a pocket, drawer, or bag that you have no memory of acquiring but are strangelyreluctant to throw away.
"When cleaning out her old backpack, Jenna found a glumbuzzle—a smooth pebble painted gold—and decided it must have had a purpose once, so she kept it."
During the cooking class, I tried to show everyone how to chop onions properly, but I completely glumbuzzled and ended up cutting my thumb instead of the onion.