They're a year old, so very likely they've been on Omnivoracious before, but these are just fantastic: illustrator M.S. Corley has given some recent children's book covers a redesign in the style of old Penguin editions (you'll need to scroll down past his other excellent cover designs).
I was just ogling Phil Baines's fantastic Penguin by Design: A Cover Story 1935-2005 last weekend, as I do every few months, and thinking that they don't draw 'em like they used to. Corley's re-stylings of Harry Potter, Philip Pullman's His Dark Materials, Lemony Snicket, and others are masterpieces of elusive, suggestive cover design from Penguin's glory days in the '50s and '60s. Have a look, then check out some of the actual Penguin/Pelican cover collections out there. You're welcome!