Go ask Alice

Okay . . . I need some help from you lateral thinkers out there. Huon Valley Theatre's Youth Theatre Group is going to stage its own version of "Alice in Wonderland". Part of the play calls for Alice to grow larger and smaller. I'm interested in how they could create this illusion. For example, one idea suggested is to use a shadow screen and have Alice's shadow increase or decrease in size. Another idea is to use "pull-up" vegetation that ascends upwards to make Alice look as if she is shrinking, or downwards to make it look like she is growing. Has anyone had occasion to do anything like this? No idea is to fanciful for us to consider. All suggestions welcome! mike