Ready for birthday cupcakes? A free birthday party is happening from 10 a.m. to noon on Sunday at the Children's Museum of the East End, 376 Bridgehampton/Sag Harbor Turnpike  in Bridgehampton -- the museum is celebrating its 10th anniversary.

"Like any birthday party, there's going to be dancing and face painting," says Paul Johnson, museum marketing coordinator. Kids will make stomp rockets, in which they design a rocket from a tube, put on a nozzle, and then jump on a bellows-like device to send it into the air. There'll be free mini-golfing at the museum's nine-hole, outdoor course.

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The museum will unveil its new donor-wall, with puzzle pieces noting donors who have pledged at least $25,000, Johnson says.

People attending the party can then stay all day at the museum. "It's a day to celebrate. We're happy to have people stay as long as they want," Johnson says.