Out with - Ice Castle
Make a magical ice castle out of colored ice.
Hear Sondre talk about the idea HERE.
Freeze water in different forms. Mix the water with different colours, put different things in it and let it stand overnight. It must be at least minus 5 degrees.
Take out all the ice blocks and start building.
You can glue them together with water that you brush with a brush on the sides that will sit together. For an extra nice effect you can light it with tea lights in the evening.