Open-Sourced Logos
These logos aren't good. A logo should have some degree of symmetry, simple enough to draw, original, and not readily resembling something in real life or a prior logo.this is an umbrella plus tear drop: http://www.logodust.com/img/logo18.pngpaperclip 
http://www.logodust.com/img/logo20.pngtoo complicated to be effective:http://www.logodust.com/img/logo9.pngripoff of star trek and anarchy circlehttp://www.logodust.com/img/logo2.pngthis was the only good one http://www.logodust.com/img/logo1.png