Hello!
One evening I was watching random youtube videos and just get idea to look for how horror movie sounds was made. One video after another and I found one with strange box. So I tried to build one myself and few days later I made video.
Anyone into Noiseboxes? Very little material about it. 
Nice one! What was your process?
I stucked tree branche to ground, wrapped up around phone with adhesive tape
(diy phone stand too 
).
Inside box I attached a contact microphone which plugged into the Zoom h1 line input.
Later in Ableton I added drum bus, overdrive, compressor and Valhalla Supermassive (amazing free plugin).
Edited in Final cut and synched video with audio.
That’s it.
More questions is welcome.
It’s cheap and very interesting for me. 
Edited: + pitched down
Thanks for the info! Great results 
I’ve got a decent contact mic but never got round to using it…. Will have to give this a go.
Thanks! My contact mic is cheap. 2 bucks from alixepress or electronics shop will do the job.
Hardware/construction tool store first way to go!
Would love to hear your ambiences. 