For this past couple of weeks this has been a very common sight in our house.Ikea with Duplo Legos to provide tunnels with a few milk and juice carton tunnels thrown in. Sometimes the cars come out to watch the train go by.
Running the trains on the tracks is a great fine motor skill exercise. The magnets which connect the trains provide an introdution to the positive/negative ends of magnets. There are also endless oppertunities for creative problem solving and role play.
With a small assortment of well chosen toys and a bit of imagination you can be entertained for hours!