I am with Miss D on this one. What a lovely thing for the children to have. We could explain to THW on Yahoo answers just so that we got it right like.

Seriously serious mode I really do think that it would be a lovely thing.
I didn't get on with my father particularly well, what with him being a cantankerous grumpy bugger but I have kept a lovely letter that he wrote to me after we arranged a surprise party for his 60th birthday at which he had reduced me to tears. Still get that letter out every so often and read it despite the fact that 20 + years have passed.