You beat me to it. I was starting to think about conduit and plastic in the spirit of MPCNC for the case where no tools are available.
I suspect a truss with lots of segments is overkill, and it seems like a lot of extra work to make all those cuts and print all those parts.
Maybe six legs somewhat like a Stewart platform would be enough. I am thinking something like this: Cramming as many bad ideas as possible into a single build - #49 by frosty but adjusted to appropriate dimensions.
The bottom plate should probably be a bit wide, and the top part should be thick and strong. In the end it might go full circle back to this this except with six legs that are full height and a beefy bracket on top: