I don't know if that link will help or not but it is a link that tells you how to make isomalt snowflakes and they look like ice to me. Perhaps you could make the icecubes the same way using a different mold?
I used the wilton silicone brownie pan (it has a bunch of little squares on it). I picked it up at Michaels. I melted the isomalt, poured it into the squares, let them set up, then popped them out. I have also seen silicone ice cube trays.