Most of us have vast (and ever-expanding) collections of tools and never enough toolboxes to house them, let alone keep them organized. Building toolboxes for one's tools with one's tools is not only meta, it's a great project. See these videos for a few different toolbox ideas:

multifunction toolbox by Timothy Wilmots


My homemade toolbox, great project for your garage by Scott's Garage


Homemade aluminium tool box / tool chest by tittytwister5251


Homemade Toolbox by Bart Janssen


Pallet Toolbox by Make:


A Toolbox: Scrap Bin Challenge 2014 by John Zhu