I have looked around and couldn't find a tray with an odd number of compartments. So, I made one. I needed an odd number to sort bullets by weight. Center is 0, to the right is +.1 and +.2 grains and to the left -.1 and -.2 grains.
I have included a 5 bin tray as well as a single bin you can print any number of to suit your needs. While I designed them for my reloading bench, they could just as easily be used to sort anything from screws to beads.
The interior front and back bottom corners are beveled so its easy to scoop items out of the tray.