OSU Families, bring your kids to the MU Family Lounge (112) and pick up a map of prearranged destinations for the trick-or-treat tour happening around campus. OSU departments will have treats, and maybe even some tricks, for you and your children to enjoy on Halloween. 3-5 p.m., Oct. 31, begins in the MU Family Lounge. Open to students, staff and faculty. Please remain with your child(ren) at all times.