For a few days I've been meaning to go to the dry cleaners to pick up some shirts. Today, I decided to stop there on the way to the supermarket.
When I got to the dry cleaners, I realized I didn't have any shirts to pick up, but I did have in my car a shirt to drop off, so the trip wasn't wasted.
But on my way to the supermarket I realized I had left the grocery list at home, so I had to turn around to get it. :( Initially I couldn't find it and I wondered whether I left the list at the dry cleaners, but then I found the shopping list waiting for me on the kitchen counter.