If for no other reason than the slightly comical super duper easy installation instruction, the SeaGate ST302504FDA1E1-RK FreeAgent Desktop 250 GB USB External Hard Drive is an excellent choice for extra storage options. This FreeAgent product weights less than four pounds and measures measures 7.5 x 1.6 x 6.4-inches (H x D x W), so it takes up very little room on your desk. It's extremely portable, so you can move it from computer to computer as needed. And it's about as user friendly as it comes. Store your photos, your text files, music and more on this sleek little hard drive. Works well with most PCs and is also Mac compatible.
This is a great back up option if your computer ever decides to take a nose dive. Just be sure to take the time to back up your files regularly to the Free Agent and you won't have to worry about losing all that hard work.