With this, your Lego TP holder will be stable on table.
I did use double sided tape for attaching items together.
Supports are compatible with Lego, there is also small test part, if you like to be sure that fitting is good.
Scale whole part regarding your fitting.
lego-test.stl | 51.1KB | |
stand_for_lego_TP_holder.stl | 518.7KB |