Definitely get an otterbox or xikar. Get one that at least holds 30 cigars because you never know what you'll want to smoke. You'll also want to get 60% humidity bead puck for the humidification too (replace the puck that comes with the humidor). Propylene glycol solutions and florist foam just don't do an efficient job. Make sure you keep a bottle of distilled water in the truck.

http://www.cigarmony.com/index.asp?P...ROD&ProdID=147

http://www.cigarmony.com/index.asp?P...PROD&ProdID=96

OR

http://heartfeltindustries.com/products.asp?cat=12

BTW, both of these sites are run by trusted members of this community, so feel confident in buying from them.