Pass the (Plastic) Baby
Create a new spin on the tradition of baking a plastic baby into a king cake and turn it into a game. Have your kids (and their friends) gather into a circle and pass around a plastic baby while music plays. When the music stops, whoever is holding the baby leaves the circle (à la hot potato). The last remaining child is declared King or Queen of Mardi Gras.
Source: Flickr User Yeshe