I don't know what other people fantasize about. Here's my fondest daydream:
When my children are grown and have homes of their own, I will visit them.
(But that's not all.)
I assume I'll have bags or luggage. I will drop them right inside the front door and leave them there for everyone to trip on.
I will take my socks off in random places and leave them wherever they fall.
At dinner I will suspiciously ask for an ingredient list of what they're serving.
I will helpfully clear my plate after I eat. I will skirt around the open and empty dishwasher and place my dishes on the far side of the kitchen. (Because I'm helpful like that.)
I will have a glass of milk and then leave the milk on the counter.
I will turn on every light in their houses.
I don't know where I get these ideas; they just come to me.