For example, if you put one of those locked plastic boxes over the thermostat, they'll put a ice bag on the box if they want more heat.

The daughter then got a written warning that all trash in the containers had to be in plastic bags that are also to be tied, (& I thought plastic bags in dump sites was a issue).

Like Jeff said can replace some if you have to but is MUCH more durable and clean proof than any fiberglass or plastic surround.

Buildings almost always use the cheapest of everything...including a $2 plastic vent boot instead of the $15 aluminum based vent boots that perform way better.  

Finally, cover the crawl space soil with a plastic vapor barrier.I like the remove baseboard and bottom two feet of drywall.

So we have one of those plastic extenders that we put on the end of the white pipe.

@Jay Hinrichs casually mentions golden nuggets like placing an extra washer/dryer in your master closet, or painting your copper pipes white so they look like plastic to fool the thieves. 

If you don't like your electric bill, turn down the thermostat and put plastic on your windows!

Large plastic barrels?

Paid off all the plastic and moved to the next one.- it's always good to see another young investor utilizing this great site!