Here are two good videos for children and youth about Worship

The Kids' Club God's Story: Worship video is really good at discussing what worship is. It goes through a 8 ways we can worship God it includes the story of David dancing, the Widow's Mite, and Woman who poured oil on Jesus' head -- all as expressions of worship. 4 Minutes

Kids' Club video for older kids/youth, "We Can Worship God" is very similar to the "God's Story: Worship" video above, but it is much longer (14 minutes) and has more Bible stories in it. It uses the same 8 images for all 8 ways a person can worship God.

Teaching Idea:
Print the screenshotted image above "8 ways to tell God he's the most important thing" and hand copies to two groups. Watch the video, then see which group can remember what all 8 images in the screenshot represent.

Discuss some of the "ways" by having kids give more examples of "what they could give, create, share, use their brainpower toward, etc." Write them down.