Basic tensegrity structure.

The central wire support the top part mass while the 3 peripheral lines (in reality it's only one wire, see further) maintain the balance.

I made very narrow holes because I wanted to use a transparent fish rope instead of a thick cord as we can find on other thingiverse posts. That said, I tried a printing at 0.2 and it went good.

TIPS: 1- As it's really hard to knot the 3 lines with the same distance, I added gutters so it's possible to use only one long wire. With this, you only need 2 knots instead of 6. Of course, the central wire is independant.

2- The central wire must be robust, it's the weakest part of the structure. I advice to use a strong knot on each side.

Enjoy!