Ema are small wooden plaques used in Japanese Shinto shrines. Visitors write their wishes or prayers on these plaques, which are then hung up at the shrine. The practice is believed to help convey one's hopes to the gods. Typically, ema feature illustrations of animals, deities, or other symbols related to good fortune. They come in various sizes and designs, often reflecting the specific shrine's theme. After making a wish, people often return to the shrine to see if their prayers have been answered.