I'd also recommend this if you are good with pets, especially dogs.

Common to see $40-$55 per day, per dog for overnight dog sitting. I.e. someone drops their dog off with you and then picks them up a few days later.

The sitter I use regularly has 2-3 dogs at a time.

Walkers can easily charge $20-$30 for a 30-minute walk. If you can find a couple of clients in the same area, you could easily knock out 2 or 3 of these in a 2-hour window.