I'm in the process of planning the setup of a vivarium and i cant seem to find any information on mounting wood/branches to the glass of a vivarium. what tools i would need, what adhesive works best, what type of wood is light enough and durable enough, etc.

I came across the below vivarium and i would like to know the magic behind how the branches are held up. thanks!

https://www.youtube.com/watch?v=HBzVSwHufMk