So we've been married now almost 2 months and I just received a really weird gift in the mail today. It's from a girl who I invited last minute because she kept saying she would like to come as my friends' dates and we had plenty of space and she's become a lot more integrated into my friend group the last year and is now living with one of my best friends. So she didn't have much time to get a gift - I'll give her that. But she gave us: a Guestbook!?? What are we suppose to do with a guestbook?? And even if she had given it to us at the wedding we wouldn't have opened it until after the wedding. So confused as to where she was going with that gift. How should I write a thank you? We can't use it for anything.