Gromit Unleashed

Various different models of the Gromit character have appeared in Oxford's Westgate shopping centre, surrounded by children entering the details on a card. Presumably designed to keep children amused whilst there. The models are colourful and have interesting graphics on them, which presumably mean something (see 2nd photo for today). As I didn't have a small child with me (where is grandson when needed) I have no idea what the meaning is. I'll have to pick up a card next week.