Traditions surrounding a child’s baptism in the LDS (aka, Mormon) Church vary by geography. In some areas, it is traditional to give the child gifts (either before or after the baptism, but not actually at the baptism), while in others it is not. Where gifts are considered appropriate, it can be difficult to decide what to get the child. Here are some ideas:
1. Framed photo or plaque. Think about getting a commemorative gift for the child who is being baptized. His/her baptism day is special, and should be remembered fondly. One way to make the event memorable is to have a token reminder of the day. If you are a family member, giving a framed photo might be appropriate. For anyone, giving a plaque (e.g., with a quote or poem about baptism) would also work.
2. Scriptures. Many children receive a personalized set of scriptures on their baptism day. Because this gift usually comes from the child’s parents, you should be sure to check with them before settling on this idea. Alternatively, you could give another appropriate book (e.g., a book about baptism, an LDS-themed young adult novel, or an appropriate book that is not church-themed).
3. Jewelry. It is also common for children to receive a CTR ring or necklace on their baptism day. Again, you might want to check with the child’s parents before settling on this option. Jewelry is a good idea, though, because it, too, can serve as a constant reminder of this important baptism day in a child’s life.
If none of the above options makes sense in your case, consider giving a gift that is not directly related to baptism (e.g., a gift that would be appropriate as a birthday gift). As with other gift-giving occasions, when it comes to baptism gifts it is really the thought that counts, so it is hard to go too far wrong.