iSkin, a well known manufacturer of trendy and stylish accessories for mobile devices, is now holding a one day 4th of July sale, with most products discounted by 40%. Items like iPhone/iPad cases, sleeves, screen protectors, earphones and even Macbook keyboard covers are now on sale. To score some deeply discounted iDevice loot, head over to iskin.com, fill up that shopping cart, and enter “CELEB40″ at checkout (the promo is now live). Note that the offer excludes the QWest and Ducati Collection, eGift Cards and already reduced items. And if you have yet to enter iSkin’s “Cool In Dad” contest (win a prize package of over $1000 – including a new iPad), better hurry as it ends July 7th. Good luck!