ST. PAUL, Minn. — Having decided on a ballerina theme for her daughter's sixth birthday party, Michelle West drove all over to find little dancers for the cake. Then she put 50 little beefeater guards around the edges. And she gave it beautiful white icing with peppermint trim.

And what happened? The kids wouldn't eat it.

It wasn't long afterward that she joined a group of St. Paul parents determined to end the birthday party arms race.

Birthdays Without Pressure is taking aim at the oneupsmanship that drives moms and dads to throw parties that will really, really impress the kids and the other parents, too.

"We feel there's a kind of cultural runaway going on right now around the birthday parties of kids," said William Doherty, a University of Minnesota professor of family social science who had a hand in organizing the group, launched publicly earlier this month.

Birthdays Without Pressure has started a Web site and launched a media campaign.

Among its suggestions for more modest, stress-free party planning: Hold gift-free parties, with a note on the invitation that says any presents will be donated to charity; eliminate theme parties and gift bags for the guests; instead of organizing elaborate activities, let kids play outside or hold a treasure hunt; and invite children only, not their parents as well.

The organization has also started collecting horror stories from other parents to argue its case. Among them:

• A birthday party for a 1-year-old featured a gift-opening that lasted two hours. The child slept through most of it.

• Seven-year-olds were picked up in stretch limos to attend the birthday party of a classmate.

• A 6-year-old guest at a St. Paul birthday party didn't like the contents of the gift bag and declared: "This is a rip-off."

The race to provide a unique experience at kids' parties can even get dangerous. In December, a 4-year-old girl was mauled by a cougar that was brought in as part of the entertainment at a birthday party for a 7-year-old in Coral Gables, Fla.

Doherty, who previously led a crusade against what he called overscheduled kids, got wind of frustration among parents after a colleague related how a mother at a parenting class had lashed out against the gift bags that have become a staple of kids' parties.

That mom was Linda Zwicky.

"I just found myself wondering, you know, does he need another pencil? Does he need another rubber ball? Does he need another whistle?" Zwicky said.

But when Zwicky began planning her son Wyatt's third birthday party, she found herself engaging in the same kind of oneupmanship.