Rub mini blinds with a couple of dryer sheets. This cuts down on static that causes dust to stick. This also works well on TV and computer monitors.
Have you ever found your child with baby oil or petroleum jelly in their hair? Dawn dish washing liquid works great at removing it.
Dawn removes oil stains from concrete driveways or in your garage. Be careful walking in the treated area, it is slick until all of the dawn is removed. Dawn is gentle enough that you don't have to worry about your plants or grass while your rinsing off the treated area.