When the glasses were posted earlier, I made a comment about making them out of simple novelty straw glasses (like so https://goo.gl/UKrkbt https://goo.gl/UKrkb

When the glasses were posted earlier, I made a comment about making them out of simple novelty straw glasses (like so https://goo.gl/UKrkbt https://goo.gl/UKrkbt). Add some coloured water, cut and seal the ends and voila.