Don't spend your time lookin' around,
For something you want but can't be found,
When you find out you can live without,
And go along not thinkin' about it,
I'll tell you something true,

The bare necessities of life will come to you!

But also the Ten Essentials - some of which are less essential if you aren't leaving civilization.
Navigation... which in the original backpacking sense it was a map and compass, but on roads could just be a map.
Sun protection
Layers
Flashlight
First aid kit
Fire
Tools - jackknife, baling wire, tape
Food - GORP
Water
Shelter

Toiletries and cooking are luxuries, but good ones.