we have sugar free popsicles here and they are good enough.... how about make your own? Try freezing some sugar free sparkling water or soda. Or can you have the juice ones with no added sugar? Freeze fruit - like berries etc and they are like a popsicle (or is that too much sugar?)
over here they have chocolate dipped frozen banana's so I assume just banana's on a stick would work to freeze - how about frozen mango or pineapple? Cherries and grapes work well too.