What to get my parents for there 50th anniversary?

My parents are 69/70. My dad don't go anywhere. So I can't get them a trip. I don't have many photo's. I know its gold. Does anyone have any idea's for me.What to get my parents for there 50th anniversary?
How about a bonsai tree? They symbolize the growth and nurturing and patience that are the keys to a successful marriage. There are some one of a kind bonsais on this site that might make a very special 50th anniversary gift.... http://www.bonsaiboygifts.com/What to get my parents for there 50th anniversary?
I would get a really nice picture of the two of them together and put it in a really nice frame and I will just bet that they love it.

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