If you want ice but live too far away from the poles to get it (like me) the here's how!
1. First, go up, about four to five hundred blocks should do.
2. Then make a small 5 by 5 room and trap yourself, with a few buckets of water, inside it.
3. Then fill the room by placing water down, picking it back up and placing it back down above the existing water.
4. When your none fill your buckets and mine out the blocks above you and wait till night when the water freezes.
5. Then you mine out the ice.
6. Repeat steps 2 though 5.