mpu: handmade bookmark swap

this swap was suggested by @crc123 .

Make your partner one bookmark.

Any medium, just make sure that
a) it is sturdy enough to use
b) bits won't fall off of it
c) it is not sticky. some sealers are kinda tacky, avoid those.
d) it is not so thick that it will mess up the book's spine

I am not going to put a size requirement because there are so many different styles of bookmarks out there. Just make sure it is something you would want to use and that you put effort into making it look neat. Your partner should be happy to get it and sad if it goes missing.

In addition to your bookmark, include a short note talking about a few of your favorite books. (: