Place a $1 bill on the trap as you begin the intro. Talk about how trusting someone involves being able to believe what someone tells you.
Begin to talk about how powerful your trap is. Demonstrate the strength found in your trap by "snapping" the end shut. Then, ask for a volunteer who would like to keep your $1. When you've selected a volunteer, ask repeatedly, "do you trust me?" When you do object lesson interactions like this, you go way overboard in your acting. It's so much more fun for the kids and memorable as well.
"So, you trust me, right? I would not do anything that would hurt you, right?" Reach out and "set" the trap by pulling the pin up to make it appear that you've set the trap.....but you haven't really.....(that part's important if you want to keep your job!)
You believe that I have your best interest at heart and want good things for you, right? Then I'd like for you to accept this $1 from off of my trap.
Kids will begin to get anxious and louder at this point at the child decides what to do in this situation. Most kids will decide to take the $1. Then, you can talk about how trust is important in a relationship with our friends or with God. We need to know that we have chosen friends wisely...ones we can trust.