Is this what you're looking for? (The high dollar solution)
http://www.dillonprecision.com/#/con.../41/Brass_Wand
Or perhaps one of these? (For the economy minded.)
http://www.activelivingnow.com/Reach...show=10&page=1
or
http://arcmate.com/grabbersandreache...FeQEQAodo2vk5g
As for me - I'd use the broom. A light touch shouldn't stir up that much dust.
When I'm testing reloads, I catch the brass for inspection in a mesh laundry bag I got for a few bucks at Walmart. Set a camera tripod on the table, a couple of clamps mount the stick on the tripod, other clapms mount the bag on the stick and then position the bag over the sandbags to catch the brass. It works so well, that I have not tried to build a brass catcher with the $2.00 nylon curtain I got at Wally World.