Update time, I was not happy with the rubber band mount and after some failure and several prototype my adapter plate finally came out good. This plate will perfectly mount the crazyflie to the rakon nano qx frame.
This is the end result

I will probably get it cut in a little less thick material but for a prototype it's not bad.
This is how it started

Then it was modified to this

Then to this

This followed

And other followed until I got the one in the first photo.
This was my diy jig to test hole fitment to the crazyflie
And this is the hole jig for the frame just some paperclips

Programs used in the design process are rhino and solidworks