Fisher-Price Rock N Roll Trike for $19.99.  Here is a screenshot for your reference.  Shipping is free on orders over $25.  If needed, use this Filler Tool to pad the order to qualify for free shipping.  This multi-funciton trike starts as a stationary rocker, and converts to a trike with a parent-assist handle, and then converts to a standalone trike.  Most places have it for over $35.