After closing, my first orders of business were to swap out the toilet ($130) and install a new and significantly nicer shower head ($30), which solved both of their problems. 

I usually swap an outlet in the bedrooms now or kitchen for one with a built in USB charger...these run about $30.  

Any gotchas for swapping out a dishwasher that looks to be over 10 years old?

I've had that happen before on a toilet; I needed to swap out the fill valve inside the toilet, so I tried to use the shutoff valve at the wall, but it would still let a little trickle of water through even when it was turned as far as I could get it. 

Where a new owner of a new construction swapped out their builder grade appliances for upgraded appliances for a discount.

After she moved out I went to inspect house and fix to sell again, and when I turned the breaker to the a/c, I found out she had swapped wires and tripped the 200 amp main breaker coming into the house. 

Maybe one day we can swap our crusty old "back in my day" stories, lol ;) @Tyler Mullen, you, sir, are absolutely correct.

Incestuous is an understatement, having worked on the 'inside' for a few years, I can only hint that its not just investors on the inside, but other REO agents (deal swapping) or straw buyer who flips it back to the agent for 2-3k more.

I too have recently started a flip the area, pick a date and time I'd love to swap some stories.

Let's swap notes.