Does this exist? A cooling cabinet for Avocado ripening and tomatos. Would like one. 
Avocado ripener
I am a web professional and organizational psychologist. I lead strategy and analysis as part of the management of my web bureau Peytz & Co. These pages journals my journeys into geekery, lifehacking and the pursuit of perfect creativity.
Jens - I have never seen one that is cooled, but the best version of this is a paper bag with the fruit inside and the top rolled over. It keeps in the gasses and helps to ripen whatever is inside.
I see several "fruit ripener" products advertised on a simple web search.
Hi Jack.
Thnx for the tip. Paper bags it is then.
Cheers!