Not sure where I heard this idea but I loved it
Sparks Guiders make a rainbow of crepe paper on the ground and the advancing girls must jump over it to get to Brownies
Brownies follow a yellow brick road (made of yellow construction paper) to get to Guides.
Guides must gain entrance to the Emerald City (an arch covered in green crepe paper) to advance to Pathfinders.
Pathfinders were given little ruby slippers to take them to Rangers.
You could have music to accompany the steps and/or some Guiders dressed in costume to help set the scene.