Ever project starts with what I consider my *absolute favorite* part of the whole design process: gathering inspiration.
Whether it's going through a previous collection or looking for new places to get content, I always make sure to spend a few days refining the feel right.
A few places I can't get enough of:
Each platforms has it's benefits and pitfalls. Pinterest, for example, would require me to begin pinning several items before the algorithm gets the vibe right and serves up similar content. Dribbble is more specifically for design and really cool graphics, and less general inspiration (which is necessary sometimes). Muzli is great in so many ways, but generally is more for articles and individual stories. Tumblr is very much a hodgepodge of content but gets me to open up my mind a bit. And lastly, looking at mags/objects sometimes puts a limit on all the potential on the internet but the tactile nature of it is exactly what a brand requires. Overall, all of them have different ways to find awesome nuggets of beauty to craft the right "mood". So my recommendation is to grab a little from all.
Here are a few examples of moodboards.