Chrismons are Christ Monograms.
In the ornament above, the circle represents God's as eternal--no beginning and no end. Down the middle is the cross representing Christ's sacrifice for us. On top of that is a representation of a butterfly, symbol of the resurrection.
Others are a Lamb (Lamb of God), Butterfly (the resurrection), a cross, a cross on top of a circle (Christ for the whole world), and many more.
Here's how to make these decorations:
a. Mix 2 cups of baking soda 1 cup of cornstarch in a pot.
b. Add 1 1/4 cups of cold water and mix.
c. Cook and stir until the mixture looks like wet mashed potatoes.
d. Put on a plate and cover with plastic wrap until it's cool.
e. Knead it.
f. Roll it out and cut out your shapes. (Two identical rulers of the desired thickness can be used with the rolling pin to maintain an even thickness.) Use a toothpick to make a small hole for hanging the ornament!
g. Allow to dry, then spray with clear spray.
h. Glue on various gold ribbons if desired.
I have used mine for many years!