I'm going to do a walk through Meiotic spore FW do models for these but if you just want something cheap & cheerful these will do.
So first off a look at what you'll need a carnifex head insulation form plastic rod, painters mate a wire that's covered in plastic that you can get in a hobby shop I don't know what it's called & an adrenal gland from the t-rex set.
|You'll also need a 50mm base|
|cut the plastic rod about 50mm long & fix it to the base|
|glue the two sides of the head together & cut the top of the head off & the part of the neck that would join to the body|
|cut the form about 50mm by 20mm by 20mm & glue the pieces from the head to each end.|
|now use some sandpapper to shape the form|
|sanding to come flush with the two plastic pieces|
|now take some painters mate & spread it to cover the form use a wet paint brush to do this|
|leave it about 24 hours for the painters mate to dry a bit|
|then glue an adrenal gland|
|cut the wire into pieces about 50mm long these will be the tentacles|
|put a bend in the wire|
|start gluing them around the plastic rod then add little dots of painters mate to the tentacles|
|a shot from above|
|the finished meiotic spore|