I made a hidden tool storage workbench that hides my bench mounted tools underneath when I don't need them and rotates or flips them up to the top when I do :
Workbench with a Flip Top mitre saw station - all in one solution workbench PART 2 - YouTube
GuruBlog - Hidden Workbench in a Shelf
Secret Spaces: Repurposing a Piano into a Hidden Workbench - Core77