Efficiency

I'm wiring some lights in the kitchen on Saturday, so I went to Menards for parts last night.
I forgot the switch plate.

I had to get more thermals at Wal-Mart today, so I checked there. They had a white decora, not ivory. I was in a hurry, but I wanted to have the parts-shopping done. So I went to Home Depot.
BAM! -there's the part. But wait,... there's more...
You check out your purchases yourself, put the money or card in the slot. Booyah! Get in, get out, nobody gets hurt.
Cool.