What would make a nice handmade Christmas gift for a history lover?

I really want to make all my family one handmade gift this year for Christmas, but am absolutely stuck when it comes to my sister! She LOVES history, is training to be a conservator of historical objects and particularly wants to deal with textiles. She already makes her own reproduction clothing & has done our family history. Does anyone please have any ideas what I could make her? I'm pretty good at sewing and constructing things and don't mind a challenge!:)