I find it helpful to put sticky-back velcro on the book and pen -- so they stay together in your purse/pack (I lose things like pens easily) -- just be sure to put the loop side on the pen so it doesn't stick to the character. Also put a cell phone number inside the front cover in case it gets left somewhere, maybe you'll get it back. I like to use a larger size book (from local craft store) so there's room on the page to add a photo of DGS with the character by the autograph (or on the opposite side, if they write big).