These are print in place and don't require any supports. They might be hard to move at first, but the more you use them the easier they get to move and click together.

These are sized for polaroids, I don't own polariods :/, I used paper cut outs and a print of Jesus I got from some Mormons as a replacement. You have to bend them a bit to get them to fit.

I included the step files for each of these to feel free to customize however you like.