If you are looking to freeze water give this tutorial a look...
http://sortvind.deviantart.com/art/Multicolordrop-pictures-32310878
They use milk & food colouring to create some really nice images.
You could also try some light painting? (30sec exp.)
Tutorial > http://kil1k.deviantart.com/art/Long-Exposure-Light-Painting-25978480
For something abstract (and shot on film) you could try a linear shutter, no one else will!
howabout a watch or small clock encased in ice perhaps part melted "time frozen" :shrug: