Set up a giant hamster wheel connected to a battery with a meter. Ask for a few volunteers to come on stage to run it. Tell them they have about 7 seconds between stopping the wheel and the battery running out, so that’s how fast transitions need to happen for the show to keep playing.
Depends how many power sockets are available.
Just get a power supply, problem solved.
Set up a giant hamster wheel connected to a battery with a meter. Ask for a few volunteers to come on stage to run it. Tell them they have about 7 seconds between stopping the wheel and the battery running out, so that’s how fast transitions need to happen for the show to keep playing.