JOEY GOES TO SLEEP
Joey explains to the children that he is very tired and is just going to have a little nap. He lies down on the playboard, then raises his head to say:
JOEY: Don't shout! You'll keep me awake.
Joey settles down again. Vampire slowly rises behind and leans over Joey. The kids shout warnings - the vampire sinks out of sight. Joey wakes up and admonishes the children for making so much noise. Repeating the "Night-night" he settles down again.
The whole business is repeated - Dracula rising, kids shouting, and Joey waking, just too late to see the intruder. He complains that the kids are keeping him awake.
This can be repeated for as many times as you think fit - but 3 times is usually enough - and on the final time Joey wakes up and does see Dracula, reacting in terror and retreating to the wings. Dracula disappears and Joey peers round the wing asking the kids "Has he gone?"
And that's it - very simple, but it can generate a lot of excitement and laughter if timed properly. This snippet can be a standalone or can be worked into a longer sequence. I usually follow this with a Rabbit and Skeleton sequence, or sometimes I preceed it with business of the spider descending from the top of the proscenium.
Incidently this same business can be used with any scary puppet - devil, ghost, monster. It is a good way to introduce a topical element with a currently popular baddie.