One inexpensive place I have stored craft supplies for many years is in my girls' old lunchboxes. Here is one. We have a stack of these in a closet under our stairs. They are very portable. We have several Barbie versions and a metal Mickey Mouse one. They bring back happy memories and are very functional.
I bought this next unit at an office supply store for about $30. It is perfect for scrapbooking-- if you are using 8.5" x 11" paper.
Even though it is a tall stack, I can find things very easily now.
Where do you keep your "stuff"?