This is such a cute ornament from All Events Adviser that is a perfect example of why I call these series Making Memories.
You will need a glass bulb, paint and ribbon. Make sure the paint is usable on glass surfaces. You can paint the inside, or add anything to the inside. To paint the inside, just add a small amount of paint inside and just rotate the bulb until the paint completely covers the inside. Make sure to rotate it occasionally while it dries so there is not a glob of paint dried to the bottom. You can then use paint to add your child’s hand or footprint. Then just add ribbon so you can hang it on your tree!