I have oil & filter changes planned, plus brake & clutch fluid changes. I have a Sifab sump to fit to my Roadster, and possibly also increase the thickness of my engine mount spacers. I also have an oil pressure gauge and voltmeter to fit to my Plus4, and the heater control needs a look, because it's sloppy, and the heater isn't as hot as it should be.
Oh and a garage clear out. This involves looking at everything. Dusting the shelves, and replacing 99% of everything. It also involves me finding stuff I'd forgotten I had.