Switch all the clothing to the wrong size hangers at Walmart.
Spend an hour collecting bird poops, mix it into a ranch dressing and put it back on the shelf
Rip a polytunnel at the local allotment.
Eat a huge amount of whey protein powder while being lactose intolerant and then take a long ride on the subway.
I don’t Think you actually have to spend an hour doing misdeeds. You just have to do an hours worth of damage. If you apply minimum wage that’s the least amount of damage that you have to cause. I would just go to the DMV and pull some extra numbers.