Recycled CDs Form Colorful Floating Waterlilies by Bruce Munro. Again, i love re-purposed art; art made of trash. This was quite interesting and i think would look good as an instillation in some city.
Mark Nixon's "Chimecco," a kinetic sculpture ( by the Sea exhibition in Aarhus, Denmark.) We can hang some timber tubes/ pieces for people to interact with the installation and make music while walking through