This Lotus Box from Kagen Schaefer has several concentric circles of inlaid wood on top. When the rings are turned to the correct design, secret compartment drawers can be opened.
This custom kids room setup includes several under floor storage compartments concealed by trap doors. These could be incorporated into many locations, and covered up with rugs.
I hadn’t seen too much documentation on Captain’s Boxes or Captain’s Writing Boxes until I ran across Hygra.com. This site out of London buys, sells and explains a multitude of antique boxes. The one featured here is a Captain’s Writing Box...
If you have a need for a box with some secret storage space, talk to TreeToBox. They build to order these custom letter boxes complete quality crafted hinges and false bottoms.