Do you have some old (fruit or milk) crates? Or you just need a practical (and low budget) storage (organizing) system? Try out this brilliant woodworking idea: the crate bookshelf! You can combine the crates in any shape that fits .
Crate bench with storage bins for students' journals. Super simple to make and not very costly. Supplies: milk crates (got them for free from Kroger), zip ties, plywood board, foam, fabric and matching storage drawers (from Lowes)