* * Innovative artists Mark Brest van Kempen and David S spend considerable time preparing before they create art. First they have to collect a variety of objects.

David says, "It's the phenomenon of finding that yields delight. I have become friends with chance, unconventional materials and ideas."Mark says, "Art is everywhere, all the time, waiting for people to change their minds. I like to mess with things until they break open and show me or hint at an aspect that I never thought was there."

Gallerygoers have a chance to see how these artists put flesh and blood to these ideas by viewing their two-man show in the Upstairs Gallery of the Salt Lake Art Center.

Take a look at Mark's "Backpack for All Occasions." You'll find a bunch of unrelated paraphernalia - parachute harness, maps, magnet, thermometer, clay buddha, oak leaves, garlic, etc. But the artist has effectively integrated them into a cohesive composition.

And David does the same as he puts together a hodgepodge of wood, tape, pins, photographs, torn paper, carpet samples and other fascinating materials and textures.

Viewers who are attracted to non-traditional, innovative approaches will enjoy this show. It continues through Nov. 13.

* * The Salt Lake Art Design Board is looking for artists who are interested in competing for a $1,500 commission as a consultant on the design team to renovate the Art Barn. Artists who would like to learn more about this commission should attend a project meeting 7 p.m. Sept. 28. They can then make their proposals at a second meeting Oct. 5. Both meetings will be at the Art Barn, 54 Finch Lane. For more information, call 596-5000.

* * A national symposium for contemporary ceramic artists and companies in the United States has been scheduled for Oct. 22 at the Nora Eccles Museum of Art at Utah State University. It will be held in conjunction with the international exhibition "Ceramics of the Weimar Republic." Featured speakers are Don Frith, professor of art and design at the University of Illinois; Jerome Greenberg, past president and general manager of Regal China Corp.; Richard Swenson, vice president of Bennington Potters Inc.; and Joseph Zeller, professor of art at the University of Kansas. The free symposium begins at 10 a.m. Registration is required. To preregister, call 750-1412.

* * Lectures, art classes, workshops, etc.

Oct. 1, Art Barn (596-5000) - Oriental brush painting for Westerners taught by Melody Moore. 10 a.m. to 4 p.m.

Oct. 1, 10 a.m. to 6 p.m., Salt Lake Weavers' Store, 1227 E. 33rd South) - Weaving, spinning and basketry demonstrations. Public is invited.

Oct. 1, 2, 8, 9, Snowbird Ski and Summer Resort (521-6040, ext. 4080) - Two-day mountain photography workshops taught by John Telford.

Oct. 7, 7 to 9 p.m., Zion Lutheran Church, 1070 Foothill Drive) - Slide presentation by Ruth Holroyd, nationally known weaver and expert on early American handwoven coverlets. Public is invited.

Oct. 9, Provo Tabernacle - A visit with Tasha Tudor, 2 p.m. Lecture/program followed by reception and autograph party. Reservations required (377-9935, 377-5311).

Oct. 10, Kimball Art Center (Park City) - beginning landscape watercolor with Jim Schnirel (649-8882).

Oct. 12, Kimball Art Center (Park City) - Wednesday evening classes begin: photography, beginning and intermediate stained glass, model drawing sessions (649-8882).

Oct. 13, Kimball Art Center (Park City) - Thursday evening classes begin: basketry, watercolor (all levels) (649-8882).

Oct. 15, Art Barn, 10 a.m. to 4 p.m. (596-5000) - Oriental watercolor painting (landscape) instructed by Melody Moore.