I covered it on my Instagram account, but I made some simple cranberry ice cubes.
For the spheres, I simply added cranberries to clear ice molds. [list of recommended products here]
For the spears/sheets, I floated some cranberries in a cooler and let it freeze for about a day. I then broke up the slab into spears. These look cool but the cranberries don't stay stuck into the ice for very long.