Greg--
One (more than a pair) that comes to mind is pancakes/flapjacks/
batter cakes (old Southern usage). It's amazing how many others come after
"O" (see-saw/teeter-totter; mosquito hawk/snake doctor/devil's darning
needle).
You might try croker (~crocus) sack/burlap bag; firefly/lightning
bug.
Rudy