Cleaning their own rooms, doing their share of laundry, putting their own clothes in the basket and then when washed putting them away, cleaning up after themselves in the kitchen and making sure the bathroom is left they way I would like to find it when they use it, including hanging up towels, clearing hair out of drain, leaving sink free of toothpaste. Leaving the sitting room tidy and straightening up cushions and coffee table when they're getting up. Putting remote in the basket.
On top of that, they help put groceries away, leave empty cartons and boxes out and not back in the fridge or cupboard, add items to the running grocery list we keep, put empty cups and plates in the dishwasher, empty the dishwasher when they come home from school, scoop cat poop as needed.
Lots of little details that are considerate of others in other words.
They also help prepare dinner and set the table and clear away.
I do the daily hoovering or wet mopping (allergies make this necessary) and deep clean the bathroom and kitchen. They dust and straighten bookshelves and other furniture if asked.