To make large Christmas ornaments, you'll need a few things: a large ball (such as a styrofoam or plastic ball), some paint and glitter, a hot glue gun, and some ribbon or wire.
Start by painting the ball in whatever color you'd like. You can also use glitter to add some extra sparkle. Once the paint has dried, use the hot glue gun to add some embellishments like stars or snowflakes. Finally, use the ribbon or wire to hang the ornament from a tree or other decoration.