there is one in the porter meadow, if you’re coming from the kresge parking lot it’ll be on the right somewhere. The other one is somewhere in the natural reserve above 9/10/merrill, but I can’t remember where exactly. Though I hiiiiiiighly recommend wandering around the trails of the natural reserve, there’s wishing-tree-type stuff all over, look for well worn paths off from the main fire roads.
the wish tree is up in the woods behind 9/10 i believe. i came across one time near tree-nine (r.i.p.) but maybe i was more lost than i thought