Nest's app store logo is clever because the door of the house doubles as the company's signature "N." SoundCloud's logo is half audio waves, half fluffy cloud. When Twitter redesigned its bird ...

Clever icons look good and represent ... Evernote's elephant logo is similar. Elephants, like Evernote's cloud notebook, never forget. A ghost, like Snapchat's "Ghostface Chillah" icon, disappears ...