Baby Shark and Dr. Nuby say doo doo doo... WASH YOUR HANDS!!!
Here are some tips from Lysol to help make handwashing fun for kids!

1. Make a hand washing chart
2. Routine and repetition
3. Get artistic - Make hand washing techniques into a fun arts and crafts project. Sit down with your child to make a homemade poster showing the correct hand washing steps and keep it in the bathroom for reference. 
4. Play a game - If getting your children to wash their hands feels like a bit of a battle, make it into a game. One idea is to play "Whose hands smell the cleanest?"
5. Make it child-friendly - Set up a child-friendly hand washing station at home with a stool and hand wash. The easier it is for your children to wash their hands, the less of a chore it will seem.
6. Sing a song - Making sure your children wash their hands with soap and water for the recommended 20 seconds is important to help prevent the spread of germs. Singing a song can help with that so they always know when it's okay to stop washing!

If you want a few more pointers check out Lysol's blog post here: https://www.lysol.com/new-moms-related-articles/infant-toddler-articles-for-moms/making-hand-washing-for-kids-fun/