LAcomputerCompany.com has a variety of protective cases, as well as multipacks for previous generation iPods all priced at $1.00 such as the See-through 3-pack, from Speck Products for the 1st gen. Nano in black, silver and red; was $29.95. Shipping rates start at about $5 and vary by method of delivery or chose in store pickup for FREE.  Sales tax applies for California residents. 

Click on "More Details" for a list of other $1.00 case deals.

-Connect and Protect for 1st gen. Nano Comes with SkinTight skin case, holster, caribeener, lanyard and neck strap; was $34.95
-Silicone Case and Strap for iPod Nano 2Gen 5-Pack (Blue/Pink/Grey/Green/Clear); was $24.99.
-Shieldz, 3 pack for 1st gen. iPod shuffle Grape,Lemon,Pink; was $19.95
-Bumpers, 5 pack for 1st. gen. Shuffle Red,Grape,Mist,Pink,Midnight; was 19.95
-Xtreme Tuffwrapz for Nano-3pack Gray/Lavender/Pink; was $24.95
-4G iPods SportSuit Convertible Blue; was $39.95