Making Mycetic spores...

The most time efficient way would be to buy them. But making them you can save a lot of cash... Googling Plasma Hatchers or Dragons Universe will show a couple of different versions of what could be used for pods.

I got 4 for $24, all I need to do now is glue them shut and paint them.

There are no official models ... yet.
However there are a good number of interesting alternatives from other suppliers. These tend to be a bit expensive though.
The cheapest solution is probably to either buy a couple of plasma hatchers (it is a childrens toy) on ebay or make something out of polystyrene/PU foam or plastic bottles/gluegun. Just search the forum for examples.

google: Auxelli0n mycetic spores

There is a video of a DIRT cheap one

I made two yesterday from a two part polystyrene egg, a couple of old CDs, hot melt glue, sand and some wires.

The egg came from hobbycraft and cost about £3 (http://direct.hobbycraft.co.uk/products-2-Piece-Polystyrene-Egg-15cm_281485.htm) its 6" tall, hollow and splits into two halves. I used a lighter to burn/melt the surfaces of the egg to give texture and shape, also to hollow out the insides a bit. Each half egg was glued to a CD at about 30° from vertical, holt melt glue in stringy gloopy gobs all over the inside and spilling out of the bottom of the egg makes it more in keeping.

For the ripper tentacles I stripped the outer insulation from about 1' of three core cable, bunched the three cores together and folded in half to give 6 individual tentacles, I bent these into an approximate shape and glued them in with more globby hot melt. To hold the shape I put a spot of superglue where the tentacles cross each other, keeps them a bit more cohesive and rigid in shape. I still need to fabricate some claws for the end of the tentacles but that will just be a bit of sprue greenstuffed on.

I sprayed the whole lot with an pale yellow acrylic primer which contained cellulose, this actually melted the polystyrene a bit more and gave it a texture similar to pumice, I gave the inside a quick coat of red primer. I washed all over with a thin brown wash and drybushed with creams/whites on the outside; the inside gloopy bits got picked out with purples, reds and pinks.

Theyre not quite finished yet but I'll get some photos up later - cost of two mycetic spores? £4