Gift them a nice holiday package to lakshadeep islands.
Oh damn. No idea about how much it costs and all, but other thing you can do is maybe a weekend package at lonavala or lavasa. That way they can leave on saturday morning and come back on sunday. How does that sound? :bigok:
How about a nice pair of swiss watches.
I know there are Male + Female combination watches available but i don't have a huge budget something under 10K
Titan has the Bandhan matched pairs. Head to a World of Titan showroom and check them out. A pair of watches will be a very good gift IMO. Check out the collections here:
Bandhan - Titan World | India
Do check out if they have those discounts going on. Have noticed some 10-20% off hoardings sometime back.
PS: I gifted a Titan Orion to my father on his 60th birthday during August 2010 and he loved it. Swapped his weary old Citizen since the next day.