I do not leave the house without them & my constant companion laptop.

What kind of finish work would that get you....Paper and plastic????

To amp the effectiveness of your gun ownership, you might consider using your handy camera to take a picture of your shotgun and having it transposed onto a small slab of corrugated plastic, perhaps with a caption which reads "This house is protected by...".

The ceiling only needs to be protected within the first couple feet of where the shelving is so your basic painters plastic or paper will work just fine.

Make sure you get the companion books also THE BOOK ON FLIPPING HOUSES & THE BOOK ON ESTIMATING REHAB COSTS (copied from @Brandon Turner best books to read pdf)

Your blow-hard companion may not fit the bill but I've noticed that more mature investors are just naturally more skeptical of future growth outside the metro.  

I understand the comfort of a companion animal, but if you're making the claim, you should have to have something to back it up!! 

Common terms for these animals: Emotional Support Animal (ESA), Comfort Animal, Companion Animal, Therapy Animal.

In addition to the great responses so far, I'd like to add this one: Polybutylene pipes (plastic tube plumbing that are prone to bursting) Most notably used in the 1990s but some pre-1990s homes may have it I believe.  

Also, if the wallpaper is from the 90's and has a plastic top layer, it's a real pain to get off because the steamer won't soften it unless it's really hot.