I've had a couple artists and crafter clients whose work was accepted at Robert Redford's Sundance catalog. The quality level is quite high, but if you feel your arts or crafts will be a good fit, send photos of your product and pricing information to the following address:
Merchandising Department Product Submission, Sundance Catalog, 3865 West 2400 South, Salt Lake City, UT 84120. You can also submit jpegs via email at firstname.lastname@example.org.
Sundance will give you a call if your arts or crafts item has been selected.
To get an idea of the types of arts and crafts that have been accepted, check out Sundance's current artist community.