I'm in recovery, so I don't ever drink alcohol-free beer or wine etc, as that would be "sniffing the cork" for me.
I mix dry ginger ale with low-sugar cranberry juice, a bit of pink grapefruit squash, a dash of Rose's Lime, and sparkling water, in whatever quantities works for you (but the dry ginger, cranberry and water are the dominant elements, obviously)
I also like simple lemon juice (not a wedge, an actual slug of juice) in still water.
Weak orange squash, if you don't find squash too childish, with an inch or so of cucumber sliced thinly and chucked in to steep, is nice - possible adding also mint? (I'd have to strain it before drinking, can't bear sieving leaves with my teeth)
I've been getting a bit bored lately with ordinary squash, so I've been thinking about making a rhubarb and ginger cordial, but I usually find cordials to be a bit too sugary, so that's a work in progress - I may not be able to hit the right balance!