One piece of cardboard, collapsible shelving...looks simple enough
If you love the look of this table (and I certainly do!), why not give this project or your own …
re-purposed chain makes a table when you add plexiglass
This May Look Like A Cardboard Box, But It Is SO Much More Than That.
The pin from which I grabbed this chair/ladder combo points to a site that no longer hosts the information. However, I can't help but love the design. Flipped towards the right and it's a chair, flipped opposite, it's a step ladder. Nice.