I have lots of eBird personal locations in situations like that, some of which I submit from regularly if they are places in my regular daily routes...Walmart, Safeway, King Soopers, Costco, Home Depot, Lowes, and varied local shopping centers, etc. I'm always birding, and thus always eBirding. Mostly it is the small subset of regular urban birds that are noted, but there are regular surprises, and even the small joys of appreciating encounters with species that are generally common but not so commonly detected while birding in a parking lot.
David Suddjian
Ken Caryl Valley
Littleton, CO