Wubi

Wubi allows you to install and uninstall Ubuntu as any other Windows application,

http://wubi-installer.org/

Re: You need at least 256 MB of memory to run the installation program!
Open a dos window, go into the folder that contains wubi.exe and run:wubi.exe --skipmemorycheck

For Very Small Memory and Disks use Xubuntu (1.5 GB, 64 MB Ram)
http://www.xubuntu.org/get

8 GB Flash Drive $35

http://gizmodo.com/377165/super-talent-8gb-flash-drive-is-worlds-smallest

Pirates of Caribbean Home Theatre

http://www.electronichouse.com/article/diyer_sets_sail_in_the_pirate_themed_theater