A Thomas train set is one of those toys that grows with your child -- you buy your first one when your son turns three and he'll play with it till he's seven. You can keep buying tracks, bridges, buildings and other accessories to build ever more elaborate layouts. The Recycling Center increases the possibilites for imaginative play with its entertaining recycle bin sorter (note to self: tell sons not to wedge coins through the recycling slots). First-time Thomas buyers, take note: this is compatible with the wooden Thomas train sets, not the plastic ones sold at Target.