New Scav Alert! Part 2: Repurposing Everyday Items for Sci Fi Terrain

What's the deal? (pun intended) 

In my never ending search for cheaper, ahem... cost effective solutions to more terrain i've found that repurposing everyday items to be a creative and imaginative exercise.
The word repurposing is a much used new term that i've let creep into my vocab. But hey, it's apropos. My latest find for repurposing was visiting my favorite scav-alert store.

My frequent forays into this scav-alert treasure trove has
yielded me all kinds of cool stuff to be repurposed.

Should i rename myself "The Historical and Frugal Miniaturist"? i think not.  However i am highly cognizant of the fact that this hobby is an addiction. Meaning that one can sink one's load of cash into this.

I usually cruise the aisles and let my imagination run amok.  And since I was on a sci-fi frame of mind I noticed these cool shapes...

Found these babies and I know what you're thinking.
What the hell are you gonna use these for?

Hint: look at the profile of the shapes.

Anything come to mind?

Get the picture yet? 

Of course, these are a few steps early in the process but use your imagination...