
Two ideas I'm already working into the script:
1. For the man, he will appear as though he is walking even though it's the landscape moving around him. Obviously with more hands this would not be necessary. In order to achieve this 'stoppage', I'm using a foam block at the bottom of the screen where the rod can be inserted. This is a common practice for shadow puppeteers - traditional Asian shadow puppetry uses sand-filled bamboo husks instead of modern foam.
2. Where I need to put down the bird or something else, I'm designing a specific 'holder' which will allow me to keep the puppet on screen whilst letting go of the rod. Instead of slotting it into a foam block, it will need to be held from above the screen. This will be sort of a hanging holder, think of it like an eye-hook where I just slide the rod in place.
3. For the bird or whatever, I do hope to have a little spring in the rod/wire, so that the puppet can move of its own accord. I need to put the puppet down only for a few seconds, not long enough for the movement from my hand to dissipate.
A digital projector is an interesting idea, but not one I'll be using. For a start, there's no way to rehearse since I don't have access to one (nor the funds for rental). What I'll be doing can be mostly made from scrap materials minus whatever I need to create my super-secret effect.
Also, part of why I'm doing it 'traditional' is because the super-secret effect is more impressive if I can combine it with what people normally expect of shadow puppets. I'm taking what Richard Bradshaw normally does and giving it a whole new spin.

To be honest, half the fun is going "oh, I don't have enough hands for this. Now how do I get around that problem?" And what's interesting is that there are always really simple solutions to be found. Changing one character into another can be done simple by disappearing one and appearing another; or making the scenery move, dumping the first character and grabbing the second; etc.
PS. No offense taken. I never thought about it much either before doing a workshop on it; purely because it was one of the few puppetry types I hadn't tried yet. Hopefully with this idea of mine it will increase the exposure shadow puppets get as a modern art form.