What is an easy way to learn how to make Christmas ornaments?

Easy. Just buy a clear ornament then have kids color it with a marker or paint it, just make sure it's dry for both. Or make it out of paper and color them, then put it on a string.

More ideas:

Find pinecones and decorate them with jewels, glitter glue, and other small items.

Get a family photo, laminate it, and put it on a string for a memorable ornament.

Add string to a colorful candycane and hang it up!

Get green and red ribbon and decorate it with sparkles for a nice ornament.

Merry Christmas!