My daily deal for today is for the Koss SA-10 portable speaker dock.
This AA powered mini speaker plugs directly into the headphone jack of your iPod, or any other MP3 player with a regular headphone jack.
The 2 AA batteries keep the speakers powered for up to 10 hours of continuous playback.
The Koss SA-10 is on sale at 1 Sale A Day, and is being sold for $0. Of course, the catch is that you need to pay $3.99 for shipping. Even after the fairly high shipping charge, these speakers are a fantastic deal, and perfect for bringing along on your next trip if you want some music in your hotel room.