you could always go for something truly unique. Seen as sewing is a craft, trade even which means your sewing needles, scissors, roles, unpickers are all tools then why not choose a tool box!
Plenty of space for bit's and bobs, needles, unpicker, tape measure, scissors loop turners, and a big area for storing things like shoulder pads, interfacing, pinking sheers, bobing winders.
it's not too unusual I don't think, I have a small tool box for my make-up! Seriously, it's this type though more of a case than a box. I keep all my brushes and eye-liners in the holders although mine are elastic and then I divide the main section up into parts for eyeshadow, lipstick and blusher/foundation!!