There is a big amounts of snow in our town, but our litle river Ligotne isn't covered by ice. Lakes are fare from Auce and it's practicaly imposible to reach them with childrens now, but we can see many icicles aroud school building in safe places. Some of these icicles we easily can get and try some first experiments.
It was nice to play with laser pointer light in icicle.

You can see also simple videoclip with sound  of this experiment. May be our students can use free form ice bricks  to get  light effects in disco evening?