Baptism is one of the two or three most important days in a Christian's life. The gift you give should match the weight of the day. Stickers and generic bookmarks don't.
1. A custom baptism song
A Holy Song written around their testimony and baptism verse. Delivered as an MP3 they can replay every year on their baptism anniversary.
2. A leather-bound Bible with their name embossed
The Bible they'll still be reading in 30 years — because it's the one their spiritual mom or dad gave them the week they got baptized.
3. A framed print of their baptism verse
Choose the verse they read on the way into the water. Frame it. It goes on their first apartment wall.
4. A wooden cross carved with their baptism date
Etsy has craftsmen who do this — deep-carved dates, initials, verse reference. Under $75.
5. Their first prayer journal
A leather journal with the first page filled in by you — the person who baptized them or discipled them into the moment.
The best baptism gift is one that names the exact day and person. A custom baptism song does that better than anything on the shelf.