So for example they have one basic ceiling fan...2 colors....brushed chrome or oil rub bronze.Letting us know where you are will help experts here point you in a better direction.One place you might consider also is Habitat for Humanity stores if your area has them. 

Also the nap, and brush is also very important 

Using a broad-brushed approach to analysis by using a "market cap rate" is foolish to me.

I would just paint the patches not the entire wall or hand the tenant the brush for the rest of the wall.

My plan is to start investing in real estate starting in the beginning of 2017 i was thinking about taking certification classes in carpentry to brush up on my skills from high school as well as certifications in electrical, real estate, house flipping, in replace of the entrepreneurship degree for right now.

quart of rustoleum paint, 3" brush and maybe some masking tape would be easiest and least expensive solution

Replace or repair fixtures as needed.The low-flow items can help if your tenants leave the water running during various activities - tooth brushing, face washing, kitchen activities, etc.Depending on the heating systems, be sure to check that humidifiers aren't wasting water.

@Kory Clark  I have never not had a job... so I don't know that part of it.. starting selling fuller brush door to door at 13 I have worked ever since.but now 42 years into a RE career what I do is.. pretty basic..

Talk about a broad brush generalization!

I actually really like math and think it is critical to properly evaluate the numbers but it is also important to realize this is not some static situation that can easily be modeled with some basic algorithms.