I use the 2 gallon Zip Loc bags to keep my projects in. Everything goes into the bag along with the pattern and start date of project and who its for. My larger quilts queen and king take more than one bag so they are marked bag 1 bag 2 etc. On my patterns I mark what stage I'm at so not spending a lot of time trying to figure out where I am at.
Have a block of the month I started a couple years ago (had some medical problems so couldn't attend the classes and keep up) and it is in a small plastic container by itself and each month the blocks are in the bag they came with (finished and all scraps). Have found this is the easiest for me to keep track of everything.