I was also dreaming of an opening in a wall where I can brush my dust into and it magically disappears... Since having cordless vacuum I no longer dream about that.

I mean even a plug which would let you plug in an elephant nose - I think that is more cumbersome than the cordless vacuum. I mean having to get that hose and hook it up every time I want to vacuum something? Meh. Easier to pick up the 21th century broom that makes dust disappear when you roll over it.

And manual brooming makes you give n passes over the same place to do the job... juck.