What are some creative ways to combine coffee with seltzer for a refreshing and unique beverage experience?

One creative way to combine coffee with seltzer is to make a coffee soda by mixing cold brew coffee with flavored seltzer water and a splash of simple syrup. Another idea is to create a coffee spritzer by mixing espresso with plain seltzer and a hint of vanilla extract. These combinations can offer a refreshing and unique beverage experience for those looking to try something different with their coffee.