for openers - Phrases/Idioms
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Also, for starters. To begin with. For example, Out of 50 possible jurors they eliminated 30, for openers, or She believed him, which indicated, for starters, that she was very gullible. The word starters is also used for the appetizer or first course of a meal, as in For starters we had shrimp cocktail. [Mid-1900s]