Being supported by your best man on your wedding day is a tradition at weddings. He is probably also one of your best, most trusted and oldest friends. It is therefore quite common to buy a small gift as a thank you present for being present on this important date in this supporting role. It’s a kind of best man gift etiquette of giving gifts for a Best Man from the groom. It is not necessary to spend a lot on gifts for a Best Man. It’s just a thank you and a token of appreciation for the support.