Bon Bon just messing around with Lyra. Based on the sake of being adorable, It was also drawn around the Fanon that Lyra is obsessed with hands. So, Bon Bon here is teasing Lyra with with a foam finger, of a human hand. And Lyra being Lyra, this excites her, and must have the foam finger.
This is also my second Official entry in the WeLoveFine contest. Hoping it does well amongst the others!
If you want to see the contest layout, then check it out below