>>>My other invention would childrens clothing cupboards with a door in their room where they can take the clothes out and a door outside in the corridor where I can push the clean clothes in at the back.
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>>Great idea! Then of course, you need one more item ... a laundry chute door in each kids bedroom so they can just throw their clothes in there (instead of on the floor) and the dirty clothes automagically ends up in the laundry room!
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>Or a conveyer belt system that runs throughout the house, with a sorter at the end which directs clothes into the washing machine and dishes into the dishwasher. (Definitely not the other way around!)

This should be enhanced to include a kid washing system. A conveyor belt (with tiedowns to ensure compliance) brings the kids to a pressure washing portal like a car wash - include air dry at the end.