Our DS Lite recently acquired some unsightly blue stains* after being stashed, naked, in our back pocket. To prevent further mishaps, we had to locate a cheap solution, and fast -- cannibalizing our only pair of jeans just wasn't an option
(sadly, even Joystiq editors have to wear pants).
Enter the PSP sleeve. We tossed out the old junk inside and slipped in our pearly white friend. Thus was born: gaming's Oreo.
*These were later removed with a soft paper towel moistened with a light soapy solution.