Children's construction set "Rocket Balance"

This is my daughter Katya's idea. She took the parts of the Tic Tac Rocket game and began to use them as parts of the construction set. It turns out that you can make a lot of different figures. This is a good option if the RocketBlocked 3D strategy is still difficult for young children (although Katya and I occasionally play RocketBlocked and she likes it).
This add-on has only a cross connector so far (and I've also laid out the main details), but I hope to add a couple more elements.
Since the basic parts were not designed for assembling large toys, but had to easily fit into one another, the assembled figures are rather wobbly. Therefore, the "Rocket Balance" set is not only a assembly structure but also a task for balance and accuracy.
You can print parts from the Rocket Basic Set and this add-on. And while adults are playing strategy games, small children will be able to play simpler ones with the same parts.

Tic Tac Rocket basic set 

RocketBlocked 3D add-on 

PS
I will supplement this project tomorrow with a lot of photos, Katya promised to repeat several previous designs!