That puppet show set is one of the very few places you can get a pickelhaube helmet. Sadly the set itself is imho a failure. It's meant to be an actual puppet set, but there is no way to manipulate the klickies on stage other than sticking your hand in and grabbing them. This not only breaks immersion, but other figures will inevitably be knocked over. There should have been a magnet system from below, or a stick system from above, or at the very least footstands for the klickies. Sad!
