If you're looking for an affordable, family-friendly rug, you might want to check out this fun collection from Kathy Ireland Home. The woven rugs are made of 100% polypropylene, while the printed designs are constructed of 100% nylon.
This one is the Pop Patterns Teddy Bear Brown Rug.
Here's the Butterfly Fantasy Ocean Glacier Rug.
There are also some good choices that are much more "boyish" but we're partial to their girlier, floral designs.