Help with lost boys props?

I was wondering if I could get a little input. I am looking at decorating a tree for the "lost boys". I have never made a custom wooden sign, but would love to hang one on the tree. I am decorating it with green and yellow LEDS. I would also like to accomplish some sort of holes throughout the tree and an "entrance" and wooden rope ladder. Has anyone tried any of these? Any input is greatly appreciated! Thanks!