My guess would have been "giant bong". ![autism :autism:](http://www.intensitysquared.com/Smileys/default/autism1.png)
I can't say the thought didn't cross my mind. ![Laughing Out Loud :LOL:](http://www.intensitysquared.com/Smileys/default/lol.gif)
Doesn't that also fall under the description "sensory aide for spazzes"?
I was thinking the same line as Gary did, but it is so narrow. I've seen big bubbly light pillars in documentaries, big enough to cuddle, and feel the bubbles too.