I use Handi Bobs from Clotilde. Here's the link...
http://www.clotilde.com/detail.html?...4794&cat_id=93
then I store the thread / bobbin combo in these boxes..
http://www.joann.com/joann/catalog/p...PRODID=prd1045
Love that I can just pick up the box and head out to a workshop and not have to think about what color thread to bring in advance - just grab and go!