Should one bring a baby gift to a bris?

While it is generally not expected that guests will bring presents to a brit milah ceremony, if this is the first time that you are visiting the parents of the newborn after the child’s birth and would otherwise bring a baby gift, attendance at a bris is a natural and convenient time to do so. There is even  biblical justification for such gift-giving;  after Abraham followed God’s commandment and had himself and the males in his community circumcised, God gave him and his progeny the land of Canaan in perpetuity.

The Bris (Brit Milah) Site

So You Want to Make a Bris
Everything you need to know about having a bris for your newborn son