Okay, this is my chest route, I find it nabs me some decent stuff.
Firstly, grab stuff from the corn. Always do this. Head to the temple. Grab seeds along the way. Climb up the temple, grab all the stuff, and go back out. Go to the open field and grab all chests near there, then go through the forest near the spawn mountain, sticking to the water, and opening chests along there. Head towards the village, picking up all chests on the way.
At this time it should be near night, so head back to Corn and grab the refills. Rinse and repeat.