Jim got a marble tower for Christmas, one we can build over and over and always be different.
The girls mainly place marbles and watch them roll down but they have an input to where to place the 'whirl circle' (lg blue and yellow circles) or the 'spinners' (one is orange, green ad pink) and all the other parts.
It's a simple, whole family activity that we are enjoying.
The towers can get tall too, EW is little taller then 30". :)
Until Next Time,