Hummm.
Ya know, back in the olden days it was customary to hand some one a introduction card of sorts. Kinda like a business card only no business per se..
Maybe a card with a "we are family " kind of photo image or logo with contact info would be appropriate? I have blank biz cards with a fab image I take to art shows or fairs so I can hook up with other artists.
Maybe you artsy types could suggest interesting images?
just a random thought