Putting up your first Christmas tree as a bona fide grown up (helping Mom and Dad put the family tree of your kindergarten crafted thing a ma bobs hanging from it doesnt count) is a momentous occasion. Why not have a tree trimming ribbon cutting, of sorts? Just set up your mini evergreen (real or fake!) with lights and garland, and have your guests each bring an ornament to hang on your tree. To get extra hokey, put everyone on the spot and make them tell a story about the ornament they chose. When the last one is hung, you do the honors of adding the tree topper and plugging in the lights.