I recently realized it was possible to connect an espresso plate 32828 to a bar with prongs 68211 through its Ø1,5mm hole, and thought it would be a good starting point to build a tree. Only four different elements are required, so it's a quite simple design, but the end result looks pretty good and natural in my opinion. However it's a tad fragile as it's based on a delicate way of attaching the parts so you have to be careful when you build it. I used tan elements for the trunk and branches but reddish brown and black can be used as well.