You choose the bag and optional sweets and bubbles. Then we'll fill it with three little trainl board books. Each board book has eight thick pages of colour illustrations and very simple text. There will be three assorted titles, all entirely suitable for babies and toddlers. A variety of bubbles are available as an optional extra, as are sweets. (Please note, champagne bottle bubbles require adult supervision as, like all bubble solutions, it must not be drunk.)