What are your favourite NON alcoholic drinks?

I have recently passed my driving test and I am finding that I have quite a lot of designated driving to catch up on. I am struggling to keep my drinking habits interesting and tend to fall back on the old regulars of coke, lemonade and, now, J2Os. Any ideas of unusual non alcoholic drinks to look out for or non... show more I have recently passed my driving test and I am finding that I have quite a lot of designated driving to catch up on. I am struggling to keep my drinking habits interesting and tend to fall back on the old regulars of coke, lemonade and, now, J2Os. Any ideas of unusual non alcoholic drinks to look out for or non alcoholic drinks which can be made from the usual ingredients of an English pub, may help to keep me sane. Any suggestions? The more the better!
Update: Some great ideas...

...keep them coming!
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