I have six lolly holders and this is what I fill them with:
1: mashed raspberries mixed with water
2: mashed blackberries mixed with water
3: mashed blueberries mixed with water
The next three require you to whip up some haricot bean water or cannellini bean water for 5 mins of so, so that it becomes foamy.
4: mashed raspberries mixed with whipped up bean water
5: mashed blackberries mixed with whipped up bean water
6: mashed blueberries mixed with whipped up bean water
The top three are best for a really hot day because they are much cooler, being icy. The bottom three almost have a slush-puppy/sorbet feel about them, which makes them physically easier to bite into and somehow less sensitive on the teeth!