Holding the bottle of honey in your hand ask your class what it is, and what comes out of it. Most everyone will know it is ,of course, honey comes out of a honey bottle.
Throwing the bottle on the ground again ask them what the bottle is. Call the bottle a mean name, and ask again what the bottle is. Finally, taking the scissors cut gashes in the bottle. Ask the class again what this bottle is. Then ask them what comes out of the bottle.
Finish off by saying, "Today we have kicked, been mean to, and hurt this little bottle of honey, but despite all that what still comes out of it?", the answer if you haven't guessed is honey lol, "God is the same we can call Him names, break His rules, and even turn our back on Him, but He loves us anyway. His love for us is unconditional. Meaning, there is nothing we can do to make God love us. He has always loved us, because God is love. He may not love the choices we make, but He still loves us. So, just like this bottle, even though we've hurt it, honey still comes out. The same is true with God, even though we try to hurt Him, love still comes out."
Well, I hope this example will be useful to you!
Love and Blessings,