fidget cube with flexible hinges

There are fidget cubes completely printed with flex. I love that toy. Inspired by this, I thought it would be nice to print the cubes with what ever material you like, and only print the hinges with flex, because I only have one type of expensive flex, but a lot of PLA in multiple colors.
I guess, there are other cases too, where the traditional hinges could be changed to flex material.

Print instructions

The hole at the top is closed on both ends (only 1 mm) for easier printing. Open the hole with a drill dia 3mm.
The hinges are printed together, cut them into parts.