I'd gone out to buy something from the DIY store, but it had just closed.
On my way back to the car I had to pass the farmer's market, which sells all sorts of random stuff, not just food. Serendipitously I thought (always a good approach to impulse buying) I passed a stall I often linger at, full of enticing old bits and pieces. No need to feel sad about the closed DIY store – here, surely, was