Here is a short list of blogs, publications and resources that I turn to when I need inspiration and guidance. I surprised myself by only listing two sources that are specifically for non-profits. I guess sometimes people selling sneakers and cereal have some pretty cool ideas that we can all re-purpose!
1. Nonprofit Tech for Good - Great blogs where you can get realistic advice, lots of free webinars, and some excellent free publications and guides. I personally love that this blog can be sort of grumpy.
2. NTEN - The Nonprofit Technology Network, which has an annual conference, and has a lot of great resources. NTEN also has local chapters - for instance, there is one in NYC that holds monthly free talks (Often with snacks and wine. Woot woot!).
3. The Ad Council - This might seem like an odd one, but the Ad Council is a non-profit that does campaigns around issues of national importance. I turn to them when I need inspiration. They often come up with campaigns that market abstract ideas, causes and principles (you know, kind of like what IIE does). They have a blog that's also a good read: http://www.adlibbing.org/
4. Think With Google - I guess you could call this Google's "thought leadership" blog, where they take a look at what they learn from their own work and share it with the public.
5. Advertising Age - This is one of the big three or four publications that cover the "Mad Men" style ad agency world - but it's something anyone who works in any kind of communications should check in on occasionally. I find their digital section particularly helpful for tracking changes to Facebook, Instagram, Twitter, etc.
6. The Effies - The Effies are an award given out in the advertising industry for effectiveness. In other words, this is for campaigns that actually achieved some sort of very real marketing communications goal. I turn to the case studies within The Effies archive when I am seeking ideas for approaching a particular audience or issue. For instance, they have a whole category of case studies on campaigns that created "positive change."
There's a whole world of internet out there, but these are where I find myself looking for ideas over and over again.