Landscaping has the largest ROI (of about 200%), adding a wood deck or a patio will also provide a big increase in value (100% ROI).Add living space, consider converting attic space, finishing a basement, or repurposing a large living area to add a bedroom without expanding the home's footprint - this will give you an average ROI of around 75%.

Outside of real estate and data science, I love board games, cooking, classic rock music and travelling (might travel around Mexico/Cancun if possible). 

I can also count on 1 hand the number of tiny home designs I've seen that don't look like repurposed tough sheds and/or have awkward dimensions.

Flooring: A lighter or mid gray lvp to compliment (~$3 sq ft material) Cabinets: White shaker style (Lowes/Home Depot, Readily Available with little lead time) Countertops: White Quartz with black veining to match black matte finishes if the return on investment is there or just a nicer laminate (calacatta marble natural stone look)Finishes: Black matte for a modern look or the classic brushed nickel.

OMG can you imagine, I do not need to make up stories or brag about how long I have been doing something, because like life, it all becomes a blur at some points.Here is another classic - We had a loan where the borrower was using the property as a rental in Danville VA (not a place I recommend investing).

Future tenants would likely appreciate the extra storage, and it could make your duplex more attractive in the long run without the hefty upfront investment that a full conversion would require.Another idea is to repurpose the shed into a functional office space or a private workout area.

Although not classically thought of as Midwestern have you also thought of Tennessee and North Carolina?

You are asking the classic question in the MTR space: how does one evaluate what could be a good MTR.Unfortunately, MTRs are at a point similar to where STRs where 10-12 years ago, and there really isn't a one stop shop source for great data.

Or do you want to tap into the equity tax deferred and re purpose into other assets?

The classic renovation question:Where do you start and where do you stop?