Where I camp there are a few ducks
When I feed them they happily eat as much as I would eat each day
Naturally .5b readers will presume these ducks were placed there as part of an FBI-mafia cooperative effort to affect my quality of life
moving on we note that regardless of their origins these
ducks like food thus a kind of crenellated floating log that automatically grows duckweed would be of benefit
there are a few options: peeing on a log with circular areas where duckweed could grow as the nitrate soaked wood provided nutrients to the duckweed is a way
some of the duckweed would remain at the crenellated sides of the log regrowing after the ducks ate what they could
you should vote for this as it is a new product made of wood, pee, plus duckweed