Has anyone removed the plastic from the cargo area of their vehicle in order to increase storage? If so, do you have pics/mods done to still make it practical?

I've noticed that I can get a case of 12 ounce beverages in the spare tire well and there is quite a bit of wasted space around the wheel wells. (I like to hide things in here).
I'm not a storage junkie, but with almost 2 kids (any day now) the HHR becomes REALLY small for trips.

Jim