When ice grows, it doesn't just grow into the beautiful lacy shapes of snowflakes. There are tons of shapes ice can grow into, including a strange phenomenon called "ice spikes." You can make your own ice spikes at home using just a normal freezer and distilled water. Try it at home by following the instructions here.
Growing ice spikes
Ice spikes are a weird phenomenon that can happen in your own freezer at home! Photo by Kenneth Libbrecht