This mallard shirt from Talbots is a great find (tipped off by @tierdear), and a piece I will have for years to come. I love a good blue oxford cloth button down, and the duck motif on it made me love it even more. It’s currently on sale, but I think if you watch it long enough you’d be able to pick it up at an even lower price.
The duck boots are from Sperry Top-Sider and are extremely comfortable. I love the green rubber / brown leather combo, and there’s a zipper on the side of the boot that make them rather easy to slip into when you’re running out the door.