Amazon has few Fingerlings on sale for $6.97 as an add on item.
Fingerlings 2Tone Monkey - Charlie (Blue with Green Accents) - Interactive Baby Pet
Fingerlings love to hang onto your finger and respond to sound, motion, and touch
Blow them kisses and they will kiss you back! Hang them upside-down by the tail and watch them monkey around!
Pet them to sleep or make a loud noise and watch them get excited!
Batteries included; Additional colors sold separately