Coffee can work with lemonade, orange juice or sparkling water as well as with milk. The source gathers ideas using concentrated coffee so that the base remains apparent when other liquids and ice are added. Some versions include alcohol, while others do not need it.
Choose the coffee preparation for the intended drink. Chilled espresso and cold-brew concentrate have different flavor and dilution profiles, even when each supplies a concentrated base. Add the other ingredients gradually and record quantities once the balance works.
For citrus drinks, compare sweetness and tartness together rather than simply increasing coffee whenever the mixture seems unbalanced. For a sparkling version, preserve the carbonation with gentle mixing. An alcohol-free combination is a recipe in its own right; it need not be an incomplete version of a spirit-based drink.

The conversation
A good question can make a better brew.