Hi,
I am using Tinydebianix that holds on a pendrive and loads to RAM the distro. It offers X11, iceweasel, and a lot of tools for an happy penguin.
Clonezilla is nice sure, but I would recommend to give a try to tinydebianix
It runs fluxbox and it is pat' made, so believe me, it is Debian, Tiny, Compact and efficient, and extremely fast.
Happy Tux