Dad asked me about a Lee Valley filter cleaning wand yesterday. I happened to be a the BORG so I blew $1.78 on a garden hose to slip-fit fitting, took a half hour out of my life and made this.
Not near as purty but, functional for this occasional task. 3/32" holes on 3/4" centers at a 12* angle. I made the wand long enough to reach up inside my cyclone filter as well (no, I don't bring the hose into the shop, I take the filter into the yard).