AutoCAD longtime guru Dietmar Rudolph created an AutoCAD LISP routine in 1997 to draw a random 3D Christmas tree. You can download the LISP routine from the below link then simply use APPLOAD to load the LSP file and then run it with the command XMASTREE.
From the commented LISP file: “This command draws a Christmas tree in 3D, including material assignments and lighting. It also renders the resulting tree. You will want to have a fast computer and lots of RAM if you try building this tree. Even with a height of 6 the calculation takes several minutes on a P/200 and uses almost 64 MB of RAM. The tree is built randomly, so you will never see the same tree again.”
I Like the graphic
Thank you.
-Shaan