Quick, simple way - without costing and arm and a leg - to put extra rolling stock on your layout.  Accurail products have much to offer.  Check out some of these kits announced in the last few months:

Colorful Paint Schemes: 

Interesting Novelty: 

Useful in Quantity:

Standard Operations:  

Now is a good time to get your Accurail Kits - can you get the kids to help you?