Have children make unique ornaments by mixing ingredients for dough that hardens as it dries, and then painting it as desired. Another idea is to give kids wire and beads of various sizes and colors to create angel ornaments.
To make craft dough, mix 3 1/2 cups of flour and 1 1/2 cups of cornstarch in a bowl while boiling 1 1/2 cups of water. Mix the water with 1 tablespoon of petroleum jelly and 1/2 cup of salt until it dissolves. Add the cornstarch and flour to form dough, and knead it for five minutes. Roll out the dough, and use large cookie cutters to press ornaments, using the eraser side of a pencil to make a hole for a hook. Dry the dough for three hours, and allow the kids to decorate each ornament with paint and craft supplies.
To make angels, measure 1.5 yards of 24-gauge wire and bend it into a L shape before threading seven 8-millimeter beads. Pull an additional six 8-millimeter beads through the wire, and thread the opposite end of the wire through the six beads, pulling until the row of six beads is above the row of seven. Thread five 8-millimeter beads through one end of the wire before threading the opposite end through as well, pulling the wire tight. Repeat, subtracting one bead each row until there is only one bead.
Add 17 6-millimeter beads to one end of the wire, and thread that side through the beads on the row of three 8-millimeter beads. Thread a 16-millimeter bead through both ends of wire and tighten. Add eight 6-millimeter beads on the longest end, and create a loop with the shorter end. Twist the ends behind the 16-millimeter bead, and adjust to create a halo.