we do think the WubbaNub Little Lamb comes close

Bathtime bliss for kids and easy peasy storage for adults

bike handles and more

and are available separately in 4 stages

Companion Seat for Ypsi by PEG Neutral we do think the WubbaNubPerfect for families with multiple children, the Peg Perego Companion Seat gives the option to add your little one to your stroller. This seat can be adjusted as your baby grows and is the perfect level of comfort, style, and safety. Details: Gives the option of adding another little rider to the Peg Perego YPSI Stroller Easily recline the seat to experience the tilt in space feature or simply reverse the seat to face forward or backwards Height