You can't. You have to be a ninja and a member to be invisible.
You can't be a fire ninja without paid membership.
You can't . There is no possible way to become a spy without being old enough. You have to meet the age requirements! Sorry!
you can't unless you get a membership card
is to wear a invisible suit
Follow the ninja into his invisible suit and try to hold on.
you can't
if you have another penguin and it is an EPF agent you can send a postcard that will say they want you to be in the EPF
You shouldn't do it. Your penguin can get deleted
Probably.
nothing
you cant get any furniture without being a member
You can't. Club penguin make their money off people being members. Of course- you can be a penguin on club penguin without being a proper member. Unfortunately though, non-members can't do much at all on club penguin. Hope it helped! :)