Man in Keyhole. Digital Image. RusBase. Russian Startups Going Global. n.d. Web. 10 Oct. 2014.
Reflection Sheet "exit ticket" by Larry Ferlazzo Let students choose the reflection activity sometimes; you choose it other times. Consider calling the exit ticket a "challenge." This may be a better word to use for your drills, also.
Check out the Letsgetengaged wiki that has links to many sites dealing with student engagement, feedback, assessments, and reflection. There are many downloadable activities.