Folks have done some pretty awesome things beyond repurposing an old toolbox into an obvious new form of storage, like creating a portable grill. I've also included a link that shows you how to restore rusted toolboxes.
(Click on the photo to head off to the project website.)
Want more inspiration? Try my Pinterest keyword search for awesome things to do with toolboxes:
Craft Box: https://blog.colettehq.com/tutorials/organization-idea-a-tackle-box-sewing-kit
Charging Station: http://www.funkyjunkinteriors.net/2013/11/make-an-instant-junky-toolbox-charging-station.html
News & Inspiration
News from Once Upon A Thyme, inspiration for garden finds and for breathing new life into what many may consider junk!