What is your tool that isn't actually a true casting and reloading hand tool but is a tool that makes them better, easier, and / or more portable?
Mine are Lee Speed Dies. Two with included shell holders, scoops, and instructions / load sheet, plus a chamfer and deburring tool, and case mouth flaring tools will fit in the little plastic box in which each comes. That's a two-fer of loadable cartridge to start, but that box is also a small fraction of the displacement of say my Hornady dies' box. LSDs are, as advertised, a faster and easier way to load on a single stage press; which all hand presses of which I know are.