Happy Muslim Mama: My First Swap

I have asked to join in with the swap Sister Farhana is arranging over at Sketched Soul. I have to send my favourite book to my swap partner, and on receiving the same from her, read it and send her a present which reflects the book she is sending me.
Firstly, trying to pick one favourite book is going to kill me. Secondly I just found out my swap partner is the wonderful Umm Nassim of Islamic Unit Studies which I am very happy about.
Now where on earth do I begin???