One of my girlfriends is turning 60 soon. She is having a handful of friends over for lunch. Any ideas what gift I could get her? She and her husband have a sailing boat they enjoy taking on the river, they have a small, elderly dog they dote on (not human children), they recently built their own home (they both chose to retire early), and enjoy travelling. She is not a fan of spas by the way, is not terribly into shopping/fashion, and is at an age where she has most things she needs/wants. I'm happy to spend up to £100. Any ideas what I could get her? Thank you.