I am not much of a user of Pinterest at all, but, I am a big fan of StumbleUpon! I, at first, stumbled just for giggles, but now I have broadened my likes and by adding art and especially graphic design to my interests, I have stumbled upon an endless amount of informational and useful websites! Some are funny where as some, like THIS ONE, are super relevant to our current project! This website shows a bunch of options and different styles of logos for a lot of different companies. While scrolling through I even saw very few of the "trending" logos which I have been trying to avoid. There are a lot of other cool options to browse on this website also such as branding AND websites! I hope you find this as useful as I did for brainstorming and a fresh approach!
P.s.
If you don't stumble upon graphic design already, it is super helpful!