Not sure how I've completely missed this, but Google has a Design site that is really amazing. Their Material Design Icons are what brought me to their site initially, then I started browsing around and realized I could spend a week just consuming information and ideas they're providing.
This gets me thinking how badly we need a communications platform at our company so I can share with my coworker friend in India. Email is lame, IM... well we're on oposite schedules.
Anyways, check it out. I geek out on this stuff!
I spy material design, pattern design, G-design icons, etc.