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Shopping & e-commerce
Smooth
Super Mono Reflection
light, green, bulb
Black
64x64
red, light, bulb
bulb, yellow, light
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Business & finance
Glyph
Black ToolBar Icons
Idea, lamp, light
40x40
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Desktop apps
16x16 Free Toolbar Icons
help, off, on
16x16
lamp, light, question
Burn, Flame, fire
Mixed
Pixel
IconSweets 2
cup, Champion, trophy
light, Idea, Buld
Traffic, light, signal
Idea, Buld, Black & white
Social media
Cartoon
Massive Twitter icon set
twitter, bulb, light
256x256
bulb, light, twitter
UI
3D
Gnome Web Icons
bulb, Idea, light
Super Vista
Flash, light
400x400
Shine 7
light, Idea, bulb
Christmas
Xmas Festival
christmas, light
light, christmas
Food & drinks
Soda Pop Caps
light, 256, Coca
Education & science
IconFinder Pixel
light, Queue, green
48x48
Sunny day General Icons