I have a Phil and Teds which I love and has served me really well over the last 3 years but my toddler now wants to walk everywhere. Is there a buggy board I can use with my phil and teds so I can still use it for my baby but have somewhere to 'stow' my toddler when he decides his little legs are now too tired to continue another step?(usually at the furthest point from home or the most awkward place he can find!)