My ex likes the toilet paper roll to be to the front. I like to turn them around before she comes to visit, to see how long it takes her to turn them back.... (She can't help herself, but fix it...)
I do that because she likes to clean and rearrange my drawers and cabinets from what I have them organized as.... So if i distract her with little pet peaves, she has less time to mess with the other stuff....