A suger cane farm that functions completely automatically, on a five minute block despawn timer. You will have to refill the dispenser with sand blocks (or any other) but it already has nine stacks of 64 in there (I think... )

Produces about about 305 sugar cane an hour (an average of 61 every five minutes).

I even added a chime to go off each time the timer is triggered (Zelda's secret chime) :D

Please leave a comment so I know whether it was worth it :)