As for stocks, some of my personal favorites are oil companies, because there are some that have tracked really closely with the price of crude for years and years, so they're pretty predictable.

Change your own oil  or bulbs in your car etc.

No oil changes, no belts, etc.

Snowbound oil on trim, cabinets and doors.  50% Repose Grey on walls.

I’ve also spoken to dozens of heart broken OOS and OOC investors both on the phone and in person who were taken by snake oil turnkey providers even offering “guaranteed returns”.

Wishing for a rock to crawl under and feeling like the steam roller had already run over said rock with me under it Learning on Friday March 16, 2008 why 47 out of 54 new construction Biscayne Bay waterfront condos didn't close on Tuesday March 13 as scheduled (Underwriter was Bear Stearns Oh goodie)Trying to access heloc float money on one vacation rentals (frozen).Trying to find rentors for two small MF properties (squatters)Trying to collect on mortgages for some large sales (Builders and developers all BKs but took some oil interests in lieu - that was OK).Trying to short sell 2.5 mil in property for $300K (that one I accomplished - oh goody :(I just call em "The dark days". 

:In older structures originally painted with oil-based paint, when you put too much concentrated TSP on your walls and scrub it in with a sponge mop, multiple layers of latex paint go soft and start peeling right off down to the oil-based paint.

Hutton talks, people listen,"PaineWebber - had 161 branch offices in 42 states and six offices in Asia and EuropeMerry-Go-Round - the darling of Wall StreetMCI WorldCom - Long Distance Discount ServicesEastern Airlines - largest airline bankruptcy in U.S. historyEnron - 22,000 employees and claimed revenues of $111 billionWoolworth's - the model for five-and-dimes throughout the U.SPan Am - an international airlineStandard Oil - dominant oil company in the worldPullman Palace Car Co - company had a long and illustrious businessArthur Andersen - resulting in the loss of 85,000 jobsGeneral Foods Corp. - the makers of Kool-AidTWA - declared bankruptcyDeLorean Motor Co. - went into receivership and bankruptcyAlong with:Lionel Corp.

BiggerPockets users know this but the masses don't, and a decade ago the public was literally screaming at politicians to impose a "windfall profits tax" on oil companies because gasoline increased so much and so dramatically.

Then on top of that we usually discover a heat vent covered in asbestos & full of old oil fce residue/dust, then we discover a run of random cast iron vent plumbing.