[GTALUG] question -- how to boot from USB with multiple ISOs?

Hi all, Right now, I'm carrying around 2 USB sticks, - one 32GB -- it boots Linux and contains about 10 bootable ISOs. - one 8GB -- to 'dd' the real ISO that I want to boot. It's 2-step process, and it's ok. But, I would like to reduce it to 1-step. How can I boot those multiple ISOs directly from one USB stick? Eg. if you want to boot Fedora/Ubuntu/Clonezilla, what do you do? I guess you can carry around 3x8GB USB sticks, http://www.canadacomputers.com/product_info.php?cPath=11_180_632&item_id=073667 but 1x32GB USB stick, http://www.canadacomputers.com/product_info.php?cPath=11_180_181&item_id=058767 is better, I think. -- William