What is another word for incidental activity?
Pronunciation: [ˌɪnsɪdˈɛntə͡l aktˈɪvɪti] (IPA) 
There are various synonyms for the term "incidental activity." Some of the popular ones include ancillary task, peripheral action, side job, secondary pursuit, supplementary effort, and additional endeavor. These words can be used interchangeably with incidental activity to indicate an activity or task that is not considered to be the main focus but is still necessary or important to complete. Incidental activity or its synonyms are often used in business settings to describe a task that is not central to the primary goal but is required to achieve it. In general, synonymous terms for incidental activity are used to imply that the task is less significant than the primary job.
