I've bookmarked this thread and will use a lot of the ideas! These are great!
I use the larger binder clips to sort and store leftover fabric strips
Un-bent paperclips (the large, plastic-coated ones) as hooks for my rulers and other tools that can hung. I hang these from cup hooks inserted into the wall.
I'm using furniture from my mom's house as my sewing and cutting tables (mom's desk is my sewing table, and I use the 3 drawers to store scissors and cutters, pins, and other notions.
I have a thread rack that I picked up at a moving sale for my better thread (the cheap stuff is in a drawer)
I use a queen-size flannel sheet taped to a piece of pegboard as my design wall (the entire sheet set was 15.00)
gallon-sized ziplocks for all sorts of things.