I want to make a ice bucket but I don't know how to make ice. I heard about something called "isomalt"? Does anyone know?

isomalt is great stuff! easy to work with too. You could also use rock candy.

Check this out:

If you have isomalt you can use isomalt for a nice clear color, or you can use the corn syrup sugar method as shown in the video. I even poured the sugar mixture in some ice cube trays and got sugar ice cubes. But be careful for the sugar to not be too hot or it will melt the tray LOL!!

i have used the sugar and corn syrup method before it works really well, you just have to watch that you dont over heat it or it will start to turn yellow to brown to black (very burnt, but great for beer bottles) i found it best to line the ice cube trays with non-stick tin foil so they would pop out nice and you dont burn your tray! good luck!! (there is pics of beer bottles and ice cubes make this way in my pics)

I tried using boiled sugar water and it worked out great. This was the best method since isomalt is quite expensive where I live and there is no corn syrup
You can see pics of the cake I did here:   http://cakecentral.com/gallery/1940163

Here is the recipe:
1 cup granulated sugar
1/2 cup water

Method: melt the sugar in the water until it is completely dissolved over low/medium heat, stir while this is happening. Once it is completely dissolved you heat up to high and start boiling for about 10 minutes or until it has reach 280 farenheit then quickly take it off the stove, dip the pot in a bowl/pot of cold water to stop the sugar from turning yellow. Pour into your mold or on a non stick foil (or oiled foil) and voila, cheap and simple