........be sure to have build yourself so to know what lurks there
Yes, trees in a variety. The first are just small branches taken from my garden. I stuck them in a molded blob of DAS pronto and stick some green stuff on the upper part. Not sure how to execute that but i am working on it.
The second picture are plastic terrarium plants (bougth about 2,5 metres from the internet) that i cut up to bush and tree size and stick in blob of DAS(on a piece of cardboard soaked in liquid plastic) and added some rock. Next step will be some paint and flock.
The third picture are part of the GW Warhammer trees. Also from the net. But instead of thinking to buy the whole trees, the little scammer who sold them just send the branches and canopy. So after looking at it for some time this solution suddenly sprang up in my mind. I quite like the little 'scary' trees.