These $98 necklaces (sold out right now), using expensive materials, would make a wonderful gift. Or you can make a much less expensive version using polymer clay and embedding beads and crystals into the surface. If you do use polymer clay remember that anything it touches while unbaked can never be used with or on food again.
For another idea there is the Beaded Solar System Necklace from the Etsy Store of LeBeadeau here. Her store is still closed with no items for sale.