I first saw this back when Brownies still “flew” up to Guides, but it can still be used today.
All Sparks have a caterpillar made of construction paper. The first year sparks wave good-buy to the second year Sparks as they go behind a blanket. (The cocoon ) They are given butterfly wings to wear on their way to Brownies.
The Brownies had a plane made from a large cardboard box. They all sat in it together while they few up to Guides.
The Guides built rocket ships out of bristle board for their third year girls and they blasted off to Pathfinders with a count down.
The Pathfinders used coloured Christmas lights to create a “transport pad” like you’d find in Star Trek and beamed themselves to Rangers.