Ozone (O3, made from O2) smells like a copy machine in a closet and will corrode (oxidate) any organic molecule by attaching the spare oxigen to it.

Popcorn airpopper machine and small bags of kernels (super cheap)Non metal (not sharp) dart boardWalking sticksCheap binocularsFishing pole if you are near a creek/water (I am)

Get your initial investments to an infinite return state, which will start to generate momentum for you to expand your wealth machine. 

Like a self-fulfilling prophesy  The fact that it gave you a hinky feeling goes to show that it's not something you'd be comfortable with, so that's a good indicator that your tenants wouldn't love it either.You just can't treat people badly, and then expect them to be a long-term ATM machine that spits out rent every month forever.But, of course, your PM probably makes money every time the place turns over, so they don't care if they are irritating the tenants and having to get a new tenant every year, because none of the tenants want to stay after their lease is up.

Washer dryer hookups in the garage (tenant provides their own machines), water heater either in the garage or in a water heater enclosure in the side yard.2.

I've had the carpets cleaned twice, replaced the washing machine, rewired the dryer, replaced light fixtures, hired pest control services, replaced blinds, realigned door frames, and had multiple calls out to plumbers (some of them frivolous).  

You select the machines, install them and tell tenant usage fee is included in the rent.

I know many "Bush pilots," I have taken 260 mile boat trips, 300 mile snow machine trips, camped on the Yukon River at -30 below zero, goose hunted from a SNOWMOBILE in may with no snow on the ground, cought 50LB king salmon in a net, excess of 50 whitefish in a net at one time and caught  6lb trout on rod and reel. 

I've never had a potential tenant complain when a unit didn't have them, but when units have had them, there are PLENTY of complaints where there are issues, and tenants are usually pretty hard on those machines, problems are inevitable.

I make home decor with my Cricut machine!