I was setting the table, loading dishwasher and washing machine, emptying bins, hoovering and dusting by the time I was 4.
DD (3) does all of above, (except load dishwasher cause we dont have one) and instead washes dishes, except glasses.(and yes, we have had a few breakages)
Tidies her toys away (max 2 out at a time)
She sorts recycling out, and helps bring it out to pavement,
makes her bed (roughly, but she tries),
folds clothes after I iron them, and puts them away, = reward of getting to choose what to wear next day
also enjoys mopping the floor,(just water, I mop at night with dettol)
polishes the taps with her magic cloth (microfibre cloth that I sewed a star onto, hence magic)
and makes me sandwiches (sometimes at random times during the night, and random contents - mustard and jam...mmmmm lol)
I know that sounds like Im a slave driver, but Im usually in the room with her and we chat/sing/play I spy, while we do it. Lovely bonding time, and it helps her appreciate that a house doesnt clean itself, and that we are a tem that work together (its just the two of us)
Ill admit that sometimes she doesnt help out, but lets face, dont we all have days like that?
I highly recommend "The Procrastinating Child" which is very good- I read it a few weks ago, and it had some great tips, mainly aimed at school age kids/teens.