Participating in a wedding takes time and effort, so sending a note along the way says a lot. Easter recommends giving a groomsmen proposal, day of note, or thank you note. Those guys “are traveling, they're putting in a lot of time, money, and stress to be a part of this,” Easter notes. “A gift is nice, but really what seals the deal, in my opinion, is a handwritten letter...it's totally appropriate and really necessary.”