My leftover SC kits are basically everywhere. Papers in the scrap room I choose to not scrap in. Little bits of paper that I cannot seem to part with are put into tiny plastic bags. I usually throw those bits along with any embellishments in a shallow glass bowl when I'm working with the current month's kit.
I put the things like alphabets and longer odd and ends in a basket. Makes it easy to thumb through. Buttons and ribbons are about the only things I have a set spot for. These jars are the perfect home for these types of embellishments.I also like to cover those cheapo pencil boxes with my own hand-stamped paper and store things like brads, stamps, and misc chipboard pieces. I'll go through it every couple of months and put certain things away and keep those that I would like to use in the next month. If it's not used within a month, it gets tucked away for me to discover later.
So that's it for me. How I store my SC leftovers. Kirsty will be back later to show what she does with hers.