Couple of ideas:Money Makes Money Theme: Let them buy a share (or few) of stock/index fund in a UTMA account..The goal there is to, ideally, watch it grow over time.

@Ben Ballinger I think that first you need to evaluate if it's even possible. as @Deanna McCormick pointed out, Washers/Dryers in the units require special hookups (electricity, plumbing, venting, sometimes gas) this could cost you a lot of money to create these or to maintain them if the property is not setup for this.Personally, I like the in-unit because it allows you to charge rent for the machines and it frees up your basement to generate more income by creating another unit or rentable storage units or you could create a shared space that will increase the attractiveness of your units (maybe a library, a game room, fitness room etc

., in addition to or instead of just the stock market.

Good bones and decently maintained, just out dated.

The smoke detectors required in such dwelling unit shall be permanently wired into the structure's AC power line, and if more than one detector is required to be installed within the dwelling unit, the detectors shall be wired so that the actuation of one detector will actuate all the detectors in the dwelling unit.In the case of any dwelling unit that is newly constructed, reconstructed, or substantially remodeled on or after January 1, 2011, smoke detectors permanently wired into the structure's AC power line must also maintain an alternative back-up power source, which may be either a battery or batteries or an emergency generator.

However if you took that money and invested in the stock market you'd expect to earn significantly more than just leaving your money in the bank account because of the risk component.  

I have about 10K saved up, another 12k in the stock market, and good credit- I just have no idea if this plan is feasible.  

The home does not have any structural issues and has been relatively well maintained.  

I also create and maintain marketing ads for other homeowners on Craigslist who want to get renter leads.

Maintain control everything you are responsible for.