Images of daily life in medieval stained glass served to draw the audience into the images. This set of images from the Chartres cathedral in France demonstrate this.
Often, the scenes of the everyday are placed on the edges of the main glass, serving as a border. In this way, the images that would be most familiar to the viewer (a blacksmith's shop, a stone carver at work, a deer hunt) make the main image have more relevance for daily life by connecting the sacred to the secular. The trade guilds who paid for the glass panels often had the honor of a panel depicting their trade, such as the images of the blacksmiths and masons. Yet these windows also served a function of reinforcing the requirements for tithing and other service by tradesmen to the church (1) The window depictions then both honored the guild for their contribution to the church and connected its members to the church's fabric. Such images served as reminders that all were a part of the church.
(1) For a discussion of the relationship between windows, trades, and the clergy, see Jane Welch Williams, Bread, Wine & Money: The Windows of the Trades at Chartres Cathedral (Chicago: University of Chicago Press, 1993).