Non-stupid version of the spiker. Should look somewhat like the old acid tube and shoot a single short-ranged sharp tentacle in the direction it's facing towards, with a very limited ability to aim.
Idea: Polyp
Re: Idea: Polyp
One of these? I think norf had a pretty good idea to make the spiker better.
Re: Idea: Polyp
Maybe like this:
or this one that uses a tentacle to suck in enemies.