here is the problem with the trays. getting molds made is very expensive. easy to justify the cost on a high end item like the Zero Haliburton travel humidors. But on a cheap, plastic travel humidor, its hard to add in the trays, and keep the costs reasonable. Its easy to make up a homemade version, but it winds up being a little bit crude, and the time involved to make a homemade tray is not really worth it from a business standpoint. Getting trays manufactured is a pretty big investment. I have the tray design all figured out, trouble is that it can easily turn a $40travel humidor into a $80-$100 travel humidor.