I just did a quick search for "wash"
Exodus 30:19
For Aaron and his sons shall wash their hands and their feet thereat:
Exodus 40:12
And thou shalt bring Aaron and his sons unto the door of the tabernacle of the congregation, and wash them with water.
Exodus 40:32
When they went into the tent of the congregation, and when they came near unto the altar, they washed; as the LORD commanded Moses.
Psalm 51:7
Purge me with hyssop, and I shall be clean: wash me, and I shall be whiter than snow.
Psalm 26:6
I will wash mine hands in innocency: so will I compass thine altar, O LORD:
Isaiah 1:16
Wash you, make you clean; put away the evil of your doings from before mine eyes; cease to do evil; <<< this one could work good for the kids.
John 13:14
If I then, your Lord and Master, have washed your feet; ye also ought to wash one another's feet.
9 Know ye not that the unrighteous shall not inherit the kingdom of God? Be not deceived: neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with mankind,
10 Nor thieves, nor covetous, nor drunkards, nor revilers, nor extortioners, shall inherit the kingdom of God.
11 And such were some of you: but ye are washed, but ye are sanctified, but ye are justified in the name of the Lord Jesus, and by the Spirit of our God.
John 13:14
If I then, your Lord and Master, have washed your feet; ye also ought to wash one another's feet.
Hebrews 10:22
Let us draw near with a true heart in full assurance of faith, having our hearts sprinkled from an evil conscience, and our bodies washed with pure water.
Revelation 1:5
And from Jesus Christ, who is the faithful witness, and the first begotten of the dead, and the prince of the kings of the earth. Unto him that loved us, and washed us from our sins in his own blood,