Swiffer

I have recently discovered Swiffer for dusting and I recommend it. They have a version with an extendable handle that also bends at the top to get hard to reach areas. It’s very lightweight so you can move it quickly (“Swiffly” I suppose). The dust collecting part is very effective. The only drawback is that it’s disposable, though you can vacuum it once or twice when it gets dirty before needing to replace it.

It was designed by somebody who knows cleaning.