I made this to hold a small flashlight to the nextruder. It's attached via the m3 holes on the fan and attached through the heat sink. Below is the onshape file in case you want to edit it for your own attachments. Default PLA print settings should work just fine.

https://cad.onshape.com/documents/b70a357eb8902500540607c1/w/a2e283c45bc92c72466d9847/e/0a93973cf7382eba2ba5cc08