You need to connect many cables in your 3v, gnd or 5v port in your ESP? Now this is not more a issue.

This box is designed for use with a breadboard like SYB-170 (170 points / 35*46*8mm).

You need to the breadboard in the middle to allow to move the 2 separeted parts.

You can connect and use all lateral ports for virtualy any ESP size because you can choose the space beetwen each side of breadboard (look the different ESP sizes in pictures).

I print using PLA but I think will works fine with PEGT or ABS too.