While I'm not a leatherworker, as far as traveling drums go, I recently got a bodhran for Christmas, and it's lightweight and easy to use. Frame is wood, with crossbraces on the inside used as a handhold. Different sound than a dumbek, but I like it. Just tossing it out as an option to consider.
I was just wondering, has anyone ever tried making the body of a dumbek out of hardened leather? For a small sized drum for traveling, it might be an idea. I remember how nerve wracking it is to try to travel with a ceramic drum, so heavy and breakable.
I don't know what the sound would be like. It would be better to put the smooth side of the leather on the inside to keep the sound cleaner.
I've drummed idly on a leathern jack before. If I knew anything about hardening leather I'd be tempted to try to make a drum this way. Just the body of the drum in hardened hide, put the head on separate of some more appropriate material. If it worked it would be keen.