What Can I Use for Organizational Shelves?

My Mother is amazingly crafty like that and LOVES to 'make' her own anything out of found/free/recycled material as much as she can...and I have seen her make shelves like what you are speaking out of cardboard boxes that she got free from the grocery store, she cut it to the height that she wanted and then she used wrapping paper to wrap it so it looked pretty and matched her home decor.

And yes, Pinterest is the way to go for more wicked cool ideas! Some people, like my Mother are just amazingly imaginative and crafty...makes me sick! ;)

I also suggest getting on Pinterest. Tons of great ideas and DIY's there.

I agree Pinterest.

Also consider Freecycle
Craigslist - Free stuff
and packing boxes, turned on their sides and stacked and tped together.

Local estate sales often have these items very inexpensively priced. If you are crafty, often there are discarded items, furniture that is broken along street on trash day that may have usable drawers, with a little glue, hammer and nails, paint or contac paper, something might work.
My first book shelves were stacks of bricks with painted boards.
I have seen desks made from an old table with the leaves made into shelves.

Check out Ikea too.

Check out Pinterest

I have seen things done with Cereal Boxes and such by adding some cute paper

Look at Gordmans thye have lots of cute things for organizing,also Target.com has loads more online than in any store.If you like Pinterest they have lots of DIY ideas or go to DIY.com,thisoldhouse.com has how to DIYs

Try Lowes or Home Depot. You can get scraps of wood there and they are not super expensive. (Some of the thick pieces can get pricey, try particle board). You can cut it to size and paint it however you like.