I make super-detailed shopping lists (I like certain brands, flavors, colors, etc and I want what I want. No substitutions. I'd rather do without than someone else or I get the wrong thing. I have my family and friends trained to this.)

I do a mental map with locations for all my errands, then figure out the most efficient (fuel- and time-) way to get it all done.

Efficiency. I live it, I love it. :biggrin: