[bob1029]

You could get something like an eco flow battery, charge it on your 120v service and then use its inverter to run your intermittent 240v loads. IIRC their models support being in charge and invert mode simultaneously, so you wouldn't have to swap plugs or change settings throughout the day.

The Delta Pro series is capable of running a 3 ton AC condensing unit, so if your tools are less demanding than this it should work out.