The tek dedicated storage can float in midair for a tiny platform (can't build on it though so not very useful) but it's expensive and hard make so only for the... dedicated...
Tek Dedicated Storage - still theft friendly? - General Discussion - ARK - Official Community Forums
ARK SURVIVAL EVOLVED pc pve Tek Dedicated Storage X10 £3.47 - PicClick UK
Tek storage box question - General Discussion - ARK - Official Community Forums
Global Fonts + Tek Storage - General Discussion - ARK - Official Community Forums