Magformers XL Cruisers Construction Set – Link 
This highly rated set is currently available on Amazon for just $40.99 w/free shipping!
- You can make construction vehicles using yellow and orange shapes with accessories.
- 37 pieces total: 6 triangles, 12 squares, 4 diamonds, 2 rectangles, 3 trapezoids, 1 figure, 9 accessories.
- Instant connection! Instant fun!