Original Xbox softmod
Softmodding your original Xbox has a lot of advantages. You can run homebrew applications, run emulators for retro consoles, install a larger hard disk and run backups of your games.
One of my previous blog posts that is about recreating Atari XL/XE floppy disks describes a SIO2USB interface inside my Atari 65XE. The advantage of it is that it includes a switch that lets you toggle between the USB connection and the SIO port. This way you can easily switch between a real and virtual floppy disk that can be mounted with AspeQt software and copy real floppy disks to disks images and the other way around.