Greetings! I'm at it again. This time, I have working code. 

The problem is: 
"Challenge Not yet complete... here's what's wrong: 
The campingList component isn't iterating the array of 'items' and creating 'campingListItem' components."

So for starters, I can say that it is. 
My campingList component contains this code. 

<aura:iteration items="{!v.items}" var="item">
     <c:campingListItem campingListItem="{!item}"/>
</aura:iteration>

I don't know how it could possibly resolve this problem any better than "correct." I know that it's iterating through them because:
 
^This is after a couple of entries. 

Is this a common problem? Does anybody else have experience with this? I didn't post all of my code to keep this as short as possible. If required, I can certainly do so. 

Additionally, the entirety of the code that generates this is directly from the Trailhead example... copy/paste, but with the variable names renamed appropriately. If my code fails to meet their criteria, then so does theirs.