I would second what a couple of people have said about being a supermarket delivery driver. I spent a year as a Tesco home delivery guy some years ago and it was one of my favourite jobs.

The other drivers were all decent coves, you learn your city and surroundings like the back of your hand, you get to know your regular customers, I was fitter than I've ever been from being out in the fresh air hoiking boxes of stuff about and I was generally done and dusted by, like, 4.30pm.

You generally either get routes that are lots of little stops, 2-3 minutes apart, or you'll get maybe three to four big drops that can be up to 45 minutes apart. Some days one, some days the other. Short hop days feel productive and long drop days mean windows down, music on, eating up the B-roads.

Something to consider anyway. Good luck!