[Solved] Sliding down my ridgeline hitting me in the face

[1qkz_]

Hey guys

This is my fifth trip hammock camping now. One thing i like to do is attach a small light, flask, phone, etc. to my ridgeline so I have easy access to it during the night. However when I did this on my last trip specifically I noticed that they would all slide down the ridgeline and hit me in the face. I tried to tie a prusik knot but it didn't help that much. Any ideas how I can stop this sliding down (preferably a simple, lightweight solution)?

Thanks