You need a case for your Pi. I used this one: https://www.thingiverse.com/thing:2488316

The Pi cam is in this case: https://www.thingiverse.com/thing:2886101 

You need 2 M3 screws and one M3 nuts.

You need to glue both parts together. This is to make it easier to print.

I made a V2, because the cam was a bit to low and some clearences to small.

Update: 

I made a V3, which is a bit closer to the Z axis, to get a better view on the hotend.