Alice, the first poster, posts two items to be combined.
Bob, the next poster, says what the resulting item should be, and proposes another item to be combined it with.
Charlie, the third poster, does the same thing Bob did.
This game continues suchlike, until we have finished it.

Questions?

I'll start.

Combine a fish and a pig.

Just to get it out of the way, C-C-C-COMBO BREAKER!

Need an example/bump? Okay.

A fig.

Combine a fig and a pillow.

The world's comfiest pig.

Combine a comfy pig with a spike.

Uncooked bacon

Combine uncooked bacon and the internet.

Skype's newest service: IBing, or Instant Baconing.

Combine a helicopter and a velociraptor.

TLS14:
Skype's newest service: IBing, or Instant Baconing.

Combine a helicopter and a velociraptor.

Sorry, let me make myself clear. You take the item you just got from the combined items (IBing) and combine it with another item. For instance, you could've said "Combine IBing and a velociraptor" or "Combine a helicopter and IBing."

I'll answer the second hypothetical combo.

You get a BacROFLcopter.

Combine a BacROFLcopter with a hat.

The Thinker:
snip

Whoops, didn't read the OP well enough. Not braining today, has the dumb, etc.

OT: You get an edible propellor hat.

Combine an edible propellor hat with a kitten.

Flying kitten (edible by definition)

Combine a flying kitten with a super model.

Atomic Kitten.

Combine Atomic Kitten with Vietnam c.1967

Commander Lazercat, 'Nam veteran.

Combine Commander Lazercat with a pony.

A dragon.

Combine a dragon with a hyper-cube.