This Lotus Table by Kagen Schaefer has 10 concentric rings of inlaid wood on the top. When those rings are spun to the right position, it allows 6 secret compartments to swing-out.
This tilt-top table, once for sale on Rita Bucheit Antiques, was built in 1825 and shows an interesting secret compartment revealed when the top is tilted vertically.
Conceal your supplies and a table / workstation in plain sight. This table folds up to look like a picture frame. This same concept could be countersunk into walls and made to look the same depth as picture frame. A design like this could save space and hide the...