I don't know anyone who does it and I would need a lot of practice to get up to that fine a level of craftsmanship. Unfortunatly the big box tool guys won't have any wood that is suitable, unless you like plywood. You would want to look for a specialty lumber retailer or order online.

I can describe the humidor thing though. The wood in a humidor is a great magnet for moisture and that keeps the humidor eavenly humidified when there is a water source in the box to initally provide the humidity. If you keep the box dry it would help dry out any remaining dampness on a razor. Also a humidor is often the only source of cool furnature grade boxes (sometimes locking) in manly styles. most other boxes of a comparable size are for jewlery and feminine in style.

I do like the gel packet idea that a good one.