Griffin Technology takes 25% off sitewide with no minimum purchase required via coupon code "LAUNCHPARTY". Shipping starts at $3.50. That's one of the best coupons we've seen from Griffin in recent months, although we saw 25% off combined with free shipping in December. Griffin sells accessories for the iPhone, iPod, iPad, tablets, and more, with cases starting as low as $7.49 after coupon.

A best bet is the Threadless Series Case for iPhone 4 in six styles ("Funkalicious" pictured) for $19.99 before the coupon above, $14.99 after. With $3.50 for shipping, that's the lowest total price we could find for this case in any style by $12. This case features a woven vinyl textile design, two layers of protection, impact-resistant polycarbonate inner shell, and more.