For dusty lampshades roll a Lint Roller over it; lifts the dust right off. Tables with a decorative cloth can be cleaned by rolling the Lint Roller over the top. Can also carefully remove the tablecloth (to keep from spreading dust) and tumble in dryer using the cold air cycle.
Another tip: If you wear decorative pins or a corsage keep a bar of soap handy and push the point of the pin into the soap several times. before pinning onto garment. Pin glides right in. I wear a live flower every Sunday to church and I use the bar of soap. (Hold onto and recycle your bars of soap when they're mostly "used up". You won't have to use a new bar)