I started looking at stuff like this and you know what stopped my search?
We started buying watermelon.
Get a watermelon, cut it in wedges and put it in a container in the fridge.
Then when it's dessert time, or time for a snack, or you're just hot and parched... pull out the container, get a fork or two and... bliss.
I don't know how healthy it works out to be, ...and I still might unpause my search.