For those of you offering or thinking about offering mp3 players for your patrons or students to borrow, woot.com has on sale today refurbished Sandisk Sansa Clip 2GB mp3 players for only $12.99 plus $5 shipping. Normally, these players retail for between $40 and $60. This player is listed as an OverDrive-compatible device.
The way Woot's daily deals work is that they are ONLY good for one day, or as long as supplies last that day. You'll need a credit card, and you will have to create a Woot user name. Woot is actually a fantastic place to go for incredibly amazing deals on technology -- you can follow their daily deals on Twitter or by RSS feed. I've seen things that would be great for your library, such as refurbished iPods and very inexpensive digital picture frames (great for the front desk), and amazing deals on DVD players, TVs, and more.
For more on Woot, see their FAQ.