A number of years ago I read an article in a parents' magazine which was about calligraphy brushes made from the hair of family members. I would love to make such a brush from my husband.
We got a set done from the first hair clipping of our daughter from an artisan in Taiwan, her chinese name and birthdate were engraved in all the brushes. They are excuisite and presented in the very intircate wooden box, IMO totally worth the money...I am not sure if you can get these done in Hong Kong as easily as in Taiwan.