I'm always looking for new ideas also.
My 7 year old DS dusts with a feather duster. He actually loves doing that.
My 4 year old DD cleans out the tub (of toys) and puts up the bath mats.
My 7 yr old DD puts the silverware away from the dishwasher, not the rest since she can't each the cabinets yet.
My seven year old loads the dishwasher, cleans the table, her room, and folds the laundry- usually better than the almost 10 year old.