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Signs & symbols
Flat
Social Buttons
sad, smiley, emoticons
DarkCyan
512x512
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Avatars & smileys
Cartoon
Brown Monsters
Doubt, Brown, shocked
Chocolate
1024x1024
Purple Monsters
monster, monsters, yellow
MediumOrchid
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Education & science
Handdrawn
Brainy Icons Free — 36 Science and Education Icons
dino, trex, tiranosur
Black
64x64
Halloween
Photorealistic
Desktop Halloween
bogey, phantasm, flight
256x256
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Mobile apps
Glyph
Free Retina Icon Set
tear, Crying, Face
60x60
Desktop apps
3D
Free Applications Icons
Character, emoticons, smiley
CornflowerBlue
24x24