PNG ICO ICNS SVG MORE
Mixed
Glyph
Free Misc Icon Set 2
power, bulb, lamp
Black
512x512
PNG SVG MORE
Social Messaging & Productivity Mix Icons
light, Idea, bulb
506x512
Octicons
bulb, light
WPZOOM Developer Icon Set
Idea, bulb, light
PNG ICO ICNS MORE
Retina Display Icons
Idea, on, bulb
Silver
64x64
light, bulb, off