The shoe speakers are a pair that are actually USB-powered speakers. Like most other speaker sets, they draw power from the nearest USB port, and receive audio through a 3.5mm jack. The speakers look like shoes well enough that it's a not a leap to consider wearing them (though you shouldn't), though we find it disgusting if you plan to take them off during work and place them on your desk.
These Stiletto Shoe Speakers are of course available in a variety of colors. Buyers can choose a red, pink, or black pair to suit their wardrobe—or desktop—fancy. The only problem? A relatively weak six-watt output, and a limited 200Hz to 5000Hz frequency range, not to mention the £25 ($37.50) price tag.
Shoe Speakers - Red (£25)