micropreneur 

A person who assumes the risk of starting and running a business. This person usually maintains a full time or part time job to support personal expenses.

A side hustle.

An event promoter

An online boutique owner

Mary is a micropreneur that works full time at Greatclips during the weekday, while she also owns and operates a full service hair salon on the weekend

micropreneur by Michele Moore October 29, 2013

micropreneurship 

Short answer - entrepreneurship on a micro level

Longer answer: It's the act of starting and completing small projects that are just outside your capacity - allowing you to meet new people, develop new skills, focus your energies on producing something useful, and growing as a person.

Steve loves doing those cool projects - he's really into micropreneurship.

micropreneurship by Jason Shen January 14, 2008