Quick tip: Beam me to the clouds in Proud to Love in Paris - The Sandbox
Update: Actually, you don't even have to climb the beanstalk. Just wait until it has fully grown, then talk to the garden manager and - bam! - you're on the clouds
Original description:
If you've already been up on the Clouds once and you want to go up again, talk to the Garden Manager and you'll be back up in no time ;-)