Phillip:
The reason why I'm considering the egg idea is because
of legal reasons - It would be illegal to perform SPIKE in a public place.
It is not as if I've been hired, gained any licence etc. to perform an act with dangerous items.
the reason why I would want to use a hard boiled egg is because I wouldn't want to be in a pub, 12 eggs in my pocket, someone bump into me and all of a sudden I'm bleeding chicken-goo. I'm sure I could put together a transformation or a vanish to finish the trick off anyway...

- and I'm sure no one will even notice its hard boiled
This is the main reason why I want a variation with a non-lethal spike tip (fold in safety spike), not just in case it goes wrong, but because of it being classed as a
loaded weapon otherwise.