When I have lost my creative spark.... I often stop, because, what I create doesn't come from a good place and often ends up looking as bad as I feel! so I acknowledge it, ( the creative blank) and go and do some research about different hats and my inspirational milliners. I often look at pinterest and get lost in the hat deisgns and sculpture. Pinterest jumps starts my creativity :)
You are on the money there! Pinterest is such a fantastic resource and a great way to visually collect ideas! There is inspiration everywhere you just have to be able to stop and let it happen organically.
I agree with cleaning up your workspace. It is like starting fresh.
I go to my fabric stash or my ribbons and just run my hand over them slowly feeling their texture and allowing the colors to invade my brain. Soon I begin to "see" new creations.
When all else fails I go back to my books on millinery and work through a "lesson" from scratch (as if I were a beginner) and as I am working, ideas start popping into my head on how to change the basic hat I am working on.
I tend to stay up after my husband has gone to bed, the phone is no longer ringing, and I don't feel as though I need to focus on anything, but what I am creating. It allows the mind to relax. Some of my most beautiful work has been done at 2 or 3 in the morning. I also like to watch old movies, when men and women still wore hats as part of their daily wardrobe.