plugins, scripts. mods What is the way to modify the game?

its a bit tricky but i suggest you to build it like that:

use 2 round blocks for the bottom left and right, then connect these 2 with regular blocks (same height) so they allign with each other.

then add 2 rounds shapes, strechted to an oval, for the "columns"

then do the same thing as for the base, just longer. If you feel like, add a light curve / rotation angle to it.

as such a small item can be tricky to build i suggest also that you build it with bigger blocks and then blueprint it. with the blueprint you can shrink it to the size you desire.

Here i made a blueprint for you but you can only use it in Unity sorry