Does anyone know where I can get a cheap buggy board, my son is 3 and while he does walk a bit there are times when he gets tired, I am using the pushchair part of my Mamas and Papas MPX travel system which I have facing towards me at the moment so he is managing to perch on the bumper bar but I have just ordered a forward facing puschair so am wanting the buggy board. I think they are a great idea but they are just so damn expensive!!!!