A trivial amount of money; chicken feed, peanuts: I received $120,000, which is no small potatoes
An insignificant person, enterprise, etc: From the tuber is derived the term ''small potatoes,'' applied with more or less humor to anything mean or petty(1840+)
The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D. Copyright (C) 2007 by HarperCollins Publishers. Cite This Source
Idioms and Phrases with small talk
Casual or trivial conversation, chitchat, as in We stood around making small talk until the guest of honor arrived. The small in this expression alludes to unimportant subjects of conversation, as opposed to serious or weighty ones.