i go to my local pizza place and ask them to give me some new pizza boxes.
i get the largest pizza box they have and i can stack them very nicely in my room.
i tape the computer image of the quilt design on the top of the box along with an index card that details where i left off. each project gets it own box.
when i receive a work order i set the box up even if all i have in there is the fabric i need to make the quilt. this way i never use "spoken for" fabric in another project by mistake.