I gave each girl a bowl of ice cream. I put out the toppings that are usually not used for ice cream, but were good when used as toppings on other things and asked the girls to come up and choose their toppings so that they could eat their ice cream while I taught the lesson. Hopefully no one wanted any of the things on their ice cream and just sat down.
"Oh, don't you like these things?"
I explained that some things are good choices for some occasions or things but not good choices for others.
Examples, clothing for the beach is not appropriate for Sunday. Loud, boisterous play is okay for sports but not in the classroom, doing homework is good but not on Sunday. You can come up with what is needed for your class situations.
I got their responses and then I put out the real ice cream toppings.