https://mbusb.aguslr.com/ Please note that the website has not been updated to the current state of this fork.

This is a project that contains a collection of GRUB files and scripts that will allow you to create a pendrive capable of booting different ISO files.

Visit the project's website for more information. (Again, I am working on getting my own version of the website up and running so that a new and updated version can be made.)