Ephesians 4 reminds children that, while anger is acceptable, it is not a reason to lash out or sin. These crafts celebrate that and encourage students to lift others up in kindness. A "flip-side of anger mask" represents practicing kindness over anger. A stress relief ball offers an alternative to sinning in anger. And a special collaborative "building puzzle" helps kids give one another kind words, craft-style.

https://ministry-to-children.com/wp-content/uploads/2021/08/Bible-Craft-Ideas-Put-on-a-New-Self-Ephesians-6.pdf

https://ministry-to-children.com/bible-crafts-put-on-a-new-self-ephesians-4

https://ministry-to-children.com/bible-lesson-a-worthy-walk-ephesians-4/

https://ministry-to-children.com/copy-christ-ephesians-4/

Craft one: “Flipside of Anger Mask”
You will need:

Paper plates
Popsicle sticks
Markers or crayons
Scissors
Markers, crayons, etc.
Other decorations (jewels, stickers, etc.)
Procedure:

Decorate one side of the plate to be “angry”, using googly eyes or drawn eyes, expressive features, and a sunset to recall the verse.
On the opposite side of the plate, draw a cheerful, “kind face” feature, with reflection on the importance of being tenderhearted. Exaggerate the mouth to remember speaking uplifting words.
Attach additional verses or captions as desired.
Tape or glue a popsicle stick to the plate, to hold it up as a double-sided mask.
Craft Two: “Anger Relief Ball”
You will need:

Socks
Cotton or stuffing
Stickers/decorations
Markers/crayons (fabric markers advised)
Rubber bands and/or pipe cleaners
Glue
Scissors
Captions/verses

Ephesians 4:17-5:2
English Standard Version
The New Life
17 Now this I say and testify in the Lord, that you must no longer walk as the Gentiles do, in the futility of their minds. 18 They are darkened in their understanding, alienated from the life of God because of the ignorance that is in them, due to their hardness of heart. 19 They have become callous and have given themselves up to sensuality, greedy to practice every kind of impurity. 20 But that is not the way you learned Christ!— 21 assuming that you have heard about him and were taught in him, as the truth is in Jesus, 22 to put off your old self,[a] which belongs to your former manner of life and is corrupt through deceitful desires, 23 and to be renewed in the spirit of your minds, 24 and to put on the new self, created after the likeness of God in true righteousness and holiness.

25 Therefore, having put away falsehood, let each one of you speak the truth with his neighbor, for we are members one of another. 26 Be angry and do not sin; do not let the sun go down on your anger, 27 and give no opportunity to the devil. 28 Let the thief no longer steal, but rather let him labor, doing honest work with his own hands, so that he may have something to share with anyone in need. 29 Let no corrupting talk come out of your mouths, but only such as is good for building up, as fits the occasion, that it may give grace to those who hear. 30 And do not grieve the Holy Spirit of God, by whom you were sealed for the day of redemption. 31 Let all bitterness and wrath and anger and clamor and slander be put away from you, along with all malice. 32 Be kind to one another, tenderhearted, forgiving one another, as God in Christ forgave you.

Walk in Love
5 Therefore be imitators of God, as beloved children. 2 And walk in love, as Christ loved us and gave himself up for us, a fragrant offering and sacrifice to God.