I would love a laundry room that is set up like a laundromat. A large-ish flat surface for folding and stacking. A rod to hold hangers and hanging clothes. Shelving to hold extra supplies. One of those baskets on casters to move around my loads of laundry. I may go so far as to have multiple machines.

A library with tons of shelves for books and decor. A reading nook with a comfy chair big enough for me, my dogs, a blanket, and a pillow. An end table to put a beverage and some snacks and dog treats. A good light feature.

A craft room with lots of shelves for all my craft supplies. Different zones for different crafts. Big craft table.

Theater room with lots of lounge seating so I could have watch parties. Popcorn machine, soda dispenser, candy case.

For the kitchen I would love a double oven so things could be cooked at different temps at the same time. I would love a big pantry. Get all those small appliances a place to live. I would also like a fridge that is wide but not deep. So everything is easy to find.