This quaich has both the thistle motif and Celtic patterns on it, both Scottish themes. You could have this engraved for a wedding, or an anniversary. This size is generous enough to have plenty of clear space to engrave your personal memories. But this design comes in other sizes (see below), so you have plenty of choice.
Add some whisky to your quaich and share a toast on your special day. This gives lots of opportunities for interesting photos as you find the best way for both of you to hold the quaich in a joint toast.