Bobblehead dolls are small figurines with oversized heads that wobble or "bobble" when moved. They are typically made from materials like plastic or ceramic and often depict famous people, sports figures, or fictional characters. The unique design features a spring or a similar mechanism that allows the head to move independently of the body. These dolls have become popular collectibles and are often used as promotional items for sports teams or movies. Many fans enjoy displaying them on shelves or desks, celebrating their favorite athletes or characters in a fun and whimsical way.