Man, talk about going overboard with souvenirs. This game has seen shirts, lunchboxes, bobbleheads, nuka-cola bottles, Pip-boy replicas, now puppets and bottle openers. I don't know if that's standard for high-profile games, since I don't follow all of them this closely, but this overkill feels pretty tacky to me.
About Vault Boy's look, I'd say there's something off about him in most depictions by Bethesda (especially the combat pop-ups), though this might be due to my dislike of their abusing the poor fella and slapping him just about everywhere. Still, with the puppet they seem to be emulating Penny Arcade's rendition, what with that before/after pic, big nose and all, so it figures that it looks different from the classic clear lines style.