How fun are these notebooks by Scout Books? They have a great range of customisable pocket-sized books produced with recycled paper and soy ink. If you can’t find one in the readymade range that tickles your fancy, you can even design your own!
Apart from all the pro uses for a custom notebook, I reckon it would make a cute wedding favour tied up with a pencil and string. You could even add a ‘This book belongs to’ box into the artwork and handwrite guests’ names to form the place cards.