We're having a few people over on Saturday and as most of them will be driving I'd like to make up a bowl of non-alcoholic punch. I also have a couple of vegetarians over, so that rules out a lot of the recipes I've found online which contain gelatin.

Can anyone recommend a recipe??

This is last minute.

Ginger Ale.
Cucumber sliced.
sliced apple or pear
Ice, lots of ice.... adapt to your guests taste eg. mint.

Bit late for last Saturday, but when my wife fancied Pimms while expecting, I used to do this:

1 part apple juice
2 parts lemonade
2 parts fiery ginger beer

Add all the extra Pimms bits (Strawberries, mint sprigs, cucumber slices, lemon slices etc.)

Lovely!