Once I looked at the stands for LEGO minifigures (part 88646) and had a thought: "what if I make an analogue for the Bionicle series sets?". As a result, I modeled such a Modular Display.

The model is a large Technic part. Its dimensions are 16Lx16Lx2L.
There are pin and axle holes on the sides to connect the displays together. The top side have pin holes to connect with sets.

And here's a brief demonstration of placing Toa Iruini and Toa Pouks in printed displays.