How to Build a Blender Box 

You can quiet that even more by putting a pad underneath. The counter top is amplifying the sound.

My wife’s had one for all of two minutes (ice cream ninja) and I’m already searching this stuff

I found this on Google looking for a ninja hushbox. Thought you might like to see the search terms that found this video. This is actually pretty cool. Could you make something like this for a projector that breathes? A projector can get destroyed by something like this if it doesn't have airflow.