You can also get spanish cedar from Home Depot. I lined the inside of my coolidor with them and then seasoned it with some oasis foam. I left it go for about a month to see what it would smell like. The wood aged some cheaper cigars surprisingly well considering that I picked up the wood from Home Depot. I have since added several boxes to this coolidor and am currently looking to build another larger one.

If you do decide to add cedar to your coolidor use velcro tape to keep the boards in place. It works like a charm.

Hope this helps.