Find a Couple's Registry & Wedding Website
Attire and Accessories
Invites and Paper
Not Engaged Yet
Engaged & Proposals
First, I am going to warn you that you will get a lot of this response (and I will wholeheartedly agree with it)...Do not have a guestbook attendant. No one needs to be standing their and telling grown adults what is an obvious thing to do. Also, it is a crap job and no one should have to work at your wedding.As for the reader, buy something for them that they would enjoy. Basically shop like it is their birthday or Christmas. The gifts you should buy for your WP and anyone else involved with the ceremony should feel personal. If the reader in question loves going to eat or something else that would involve a gift card then that is great, but just make sure that it is personal to their likes and/or hobbies.
OP, you may also want to make your sig picture a bit smaller. I am not sure what other people think, but it is kind of large.