I modified the Foldarap using simple square Alu pipe, which I had many laying around. It fits in my carry on suitcase, an yes I have traveled with it (Just be ready to answer lots of questions from airport security!!)
I have moved on to build a bigger version with the standard 20cm x 20cm print bed.
Source files: https://github.com/EmmanuelAdetutu/TeeBotMax
Kits and parts: http://www.3dstuffs.nl/ (ship worldwide from the Netherlands!!)