I make twenty or so cards with a sentence on each one. I have students vote on whether the statement is true or not...Here are a few examples:
I have a dog name Elvis. (true)
I like to eat green apples. (False)
I read each statement to the class and have them vote, showing hands, whether it is true or false. Some of the examples are easy (I like to read; I like kids) and some are harder (I like to sew: I like to hike).
Then I have students go home and make three statements about themselves to share the next day.
This easy exercise introduces you to the class and makes it easy for students to share themselves too.