Here's a tip I'm passing on that originally came from my lovely mother.
You know those silly bags you get sheets and curtains in? Yeah, I don't know WHO thinks that a set of sheets is EVER going to fit in there again! You can reuse them to hold your various crafting/sewing projects! This keeps the pieces from getting separated so that everything is right where you need it the next time you dig it out of your works in progress pile. The clear ones are especially nice so you can see what's inside!