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Avatars & smileys
Outline
Emoticons
smiley, cool, nerd
Black
512x512
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Cartoon
Very Emotional Emoji
smiley face, summer, smiley
64x64
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Signs & symbols
Flat
Facebook Likes
rocking, Awesome, Like
100x100
Education & science
Handdrawn
Brainy Icons Free — 36 Science and Education Icons
dino, trex, tiranosur
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Business & finance
Photorealistic
Free Crystal Icons
precious, jewel, iced
Iron Man Icons
user, potts, Girl
Computer & hardware
3D
Free Google Glass Icon Set
Glasses, googleglass, silver
1024x1024
Smooth
Popo 2004
cool
128x128
Halloween
Vista halloween
cool, halloween, jack o lantern
256x256
UI
Ultimate Gnome
cool, Emblem
Pixel
Gnome icons
Emblem, cool
32x32
Nuvola
cool, Colors, Modules
cool, Folder