Case-Mate is offering 20% off site-wide with the coupon code ‘MDAY2012’, now through May 31st. They offer free standard shipping on all US orders
ZAGG is knocking 20% off keyboards and cases and 50% off almost everything else, plus they are throwing in free ZAGGFOAM on all orders of $9.99 or more. There sale prices are good both today and tomorrow.
UNIEA is offering 25% off their entire lineup of iPhone, iPad and iPod touch cases today with the promo code ‘MDAY12’.
Finally, today-only, SkinIt is offering 30% everything including its entire line of apple device skins, just use the code ‘HONOR30’ or ‘TWITHONOR’ when checking out.