I thought I'd share this since it worked so well. I had to insulate a small cavity that I only had access to through a 2" hole. I made a mini cellulose insulation blower from a cat litter bucket, a shop vacuum and a piece of 2" plastic pipe. I just tossed the loose cellulose into the bucket and snapped the top shut, inserted the outlet pipe and turned on the vacuum (in the blower mode). It worked perfectly!