Who said 1/8th of an acre is a useless investment?
I remember this article some years back where
this guy claimed with boldness that 1/8th is a "dead investment" and some misguided people actually believed him

Wapi?
People are making serious money from even less than an eighth doing all sorts of things.
For example,
1) You could
strawberry farm2) You could
zero graze 33 cows on it and make so much money from milk you will have to plead with your wife to spend faster.
3) You could
grow tomatoes and make decent money
or if you are an
agriculture wizard like this smart and hardworking kamzee in the video below, you could literally grow everything and make more money than someone with 5 acres in the village who grows maize.
The list is endless. And I haven't even mentioned the benefits that accrue from developing the plot.
Whenever I see someone say in this here our land of opportunity that a plot (of any size) is useless, I just shake my head in both amazement and amusement.