SmallBusinessTrends.com lists 50 business ideas for those with no interest in or low access to traditional business technologies.
In its 2016 list, SmallBizTrends.com lists cleaning businesses as the #1 low tech business idea:

 


All you need to start your own cleaning business is a stockpile of cleaning supplies and access to clients, which you can gain through word of mouth, flyers or classified ads if you don’t want to set up your own website.

For a solo-preneur getting started, this may seem sufficient from a technology point of view, though CleaningBusinessToday.com recommends a thorough knowledge of and compliance with federal regulations regarding chemical use in the workplace as well as an accountable (read: technology) bookkeeping and accounting system for regular tracking and year-end reporting.

This early part of your start-up phase is also a great time to investigate the technologies that will become necessary if you plan to grow your business to including employees and management staff, let alone multiple locations or franchises.

ProTeam FS 6 Ergonomics (list embed)