Your system looks nice! I usually use plastic bobbins with my kits and then I place a piece of clear tape on the bobbin and use a CD/DVD marker to draw a symbol on it (that is a permanent marker with a very fine tip). When done with the project, I remove the leftover thread and the tape; the thread goes onto carton bobbin and into storage container - that is if its a DMC and I know its color number. If not, it stays in a separate zip lock together with the original paper pattern it came with.
chekccard