Do some form of exercise. I’ve not ridden a bike off the turbo in nearly 2 years, and precious little on it. No idea why, just lost the love. Maybe try getting back to it, or to the gym, or even running.
Get the cottage rewired (shudder), the bathroom replaced, the damp sorted and redecorate from top to bottom. All that requires a) planning and b) my wife decamping to her son’s for (much of) the duration.
Sell surplus stuff.
Replace the cooker hood.
Sort out my pitiful occupational pensions before my 65th in mid-March.