Some others that I've used/am considering/had recommended to me:On-site, coin-operated laundry machines (most relevant for multi-family properties)Renting out storage space in basement or on-site shedRenting out unused off-street parking (where I live, winter RV parking is at a premium)Converting non-conforming to conforming rooms (including basements) to allow for re-organization and classification as bedroomsAdding accessory dwelling unit(s) to your property (may not even require separating lots)Separating utility metering (or installing individual unit readers) on multi-unit properties that are currently metered togetherDepending on your market, furnishing a portion of your units and renting them out fully furnished to shorter-term renters*Some (most) of these will depend on how individual properties are zoned, what zoning requirements are in your locale, and what there is demand for in your market.

BRRRR is just a coined term from this site - all investors are using this type of model, some just aren't labeling it as BRRRR :)  - good luck & welcome to BP! 

There's 2 sides to this coin.

It would be a crypto kid Lol!

I would keep the management co in place, especially if you do not have experience dealing with tenants.Its costing you $90 a month to hold the property but let's assume you appreciate at 3% a year, it will more than cover your $90 a month when you decide to sell.Even Though the market is tight now, you can just listed for sale anyway and see if there are any takers.

Like flipping a coin twice, will I get two heads, or a tail this time.

FYI - we coined the term"slumtenants" as we believe slumlords & slumtenants deserve each other:)

You failed to mention that your $14 Billion appraisal came from Sam Bankman-Fried's offer to buy it with his coins. 

@Chuck Klinger It’s been coined by @Brandon Turner here on BP

Desiring to act but anxious you may make a mistake.Have you considered flipping a coin?