Saying "Thank You"

In VBS today, we studied about the 10 lepers who asked Jesus to help them by healing them (Luke 17:12-19). Jesus told them to go show themselves to the priest. The picture above is what my 1st and 2nd graders made to act out this story. Each of them were given two gloves. All ten fingers one one side of the plastic gloves were given sad faces and "leprosy" spots.
The other side of the gloves were given happy faces. The Bible tells us that on the way to see the priest, the lepers were cleansed. But, only one of the lepers came back to tell Jesus "Thank You". Jesus asked in verse 17, "Were there not 10 cleansed? Where are the other nine?"
The kids also were given "leprosy" with baby powder and acted out the story. They enjoyed the story, but learned the importance of saying thank you. The handprint cookies below also illustrated the story. You can tell the points of this story were really emphasized today! They also learned about the deaf/mute man being healed, but there were more activities to do with this healing.
One leper returned and told Jesus thank you. One leper returned and praised God. Only one. Which leper would I have been? The one who returned and said thank you and praised God? Or, one of the nine who accepted the healing power, but failed to give Jesus and God praise?

I wonder which one God would say I am? I'm afraid I need to work on telling Him more often how thankful I am for all of my blessings, and how thankful I am for the gift of His Son, Jesus.