Take a look here for travel humidors. I picked up one of the large yellow ones last year for vacation and it works fantatic. Recenly replaced the supplied foam inserts with trays I picked up from Heartfelt industries. You can get a digital hygrometer for about 20bucks. Throw that and some humidity beads in there and you should have a near perfect climate. I have used this for travel on my bike. I lash it down and off I go. Never had a problem with the condition of the cigars. I have even revived some that were too dry to smoke in it.

http://dryboxes.safeshopper.com/8/cat8.htm?805

Hope this helps.