Boxed collection of tracks from Thomas the Tank Engine, some trains of varying sizes from the same collection, some Lego and Duplo pieces (see images in the comments), some building odd and ends from other collections, some cars and trucks, a bag of tires and rims for cars and trucks. Enough to keep your young man busy this winter. PLEASE NOTE: THERE ARE LOTS OF TINY PIECES (THINK LEGO)!! NOT IDEAL FOR THE UNDER 6. (S)