Taps
Lots of Bottled water
Lots of Bottled beer
Lots of Bottled wine
Full Roof collecting water butts & Sawyer straws & hundreds of purifying tablets
Easy Redirect of garage roof drain.
Clean Tarpulin for harvesting.
Meat:-
Freezers
Tins of meat and fish
Tinned and dried Meat substitutes
Crossbow and callous streak
Internet:-
Landline broadband
Mobile tethering O2
Mobile tethering Other network sims.
Dial-up modem, if I can remember how.
Heat:-
Gas central heating (Needs electricity)
Small gas fire.
Small electric heaters
Ah! 5h1t. Under-prepared.
Cooking:-
Electric hob, microwave and oven
Coal effect gas fire that could be used to boil a pan, at a pinch *
Cheap gas barbie with 3 substantial gas bottles.
Little gas camping stove with a dozen or so cartridges.
Home made gallon-can rocket stove.
Tiny collapsible wood fired camping stove + cat litter fuel.
Thousands of matches and dozens of lighters.
* The big issue with non-electric cooking indoors would be real risk of carbon monoxide poisoning.
This seems to a big expected risk to those currently struggling in Texas.