Try cleaning vinyl shades with dryer sheets. This removes surface dirt and reduces static cling, so dust won't collect as fast. For wooden blinds, vacuum with the soft-brush attachment and use oil soap to spot-clean.
Making Crystal Sparkle
For a streak-free shine, fill a spray bottle with a solution of one part rubbing alcohol to three parts water. Spray crystal and wipe it dry with a clean white cotton cloth. Use a cotton swab to reach crevices.
For detailed figurines and other knickknacks, a feather duster doesn't do the trick. Try using a paintbrush with long bristles to sweep dust from surface details.
Make furniture gleam by using a foam pad to apply furniture polish, then buff with a lint-free material like a cotton baby diaper or T-shirt.