How has God used you today?

I just had a Bible study with members of the CLA, and Mark Anschutz told a story he remembered about Marxhausen. Reinhold used to tell his students that they were tools in God's hands, and he'd ask them "How has God used you today?" If an artist has a good tool, he uses it a lot, to the point the tool becomes well-worn and very familiar. A tool is not made to just sit in a toolbox, ready to work, but not being used.