I may be the last Dillon owner on the planet to find out about them, but just in case I am not I thought I would take a moment to sing the praises of UniqueTek. They sell a lot of different things, but a guy at my IDPA club pointed me towards them because of their Dillon reloading accessories.
Just some really cool ideas! I just bought a small LED flashlight designed to fit in the central toolhead hole (very easy to inspect powder charges now—something I am even more paranoid about now since one of the reloaders at my club just blew up his Wilson ), which is cool.
The real winner, though, is the calibrated micrometer that replaces the powder adjustment screw on the powder bar. It comes with a spreadsheet for generating calibration curves so it is very easy to dial in the desired powder amount very quickly.
All in all, some very neat stuff.