Amazon
Not only is the Amazon logo smiling, but there's also an arrow starting at the "a" and ending on the "z" to indicate that Amazon has everything from A to Z that you don't need but will buy so you spent enough to qualify for free shipping.
How many of these 26 "hidden" images revealed in plain sight did you initially miss?
FedEx
This is one of the best known logo images, but just in case you've missed it, look between the "E" and the "x." In the white space there's an arrow that subliminally represents speed and precision.