Ice Lantern Mk2

By George, I got it!
Tipped it out of the bucket ever so gently onto the soft snow so that it wouldn't break like Mk1 and voila, it was perfect. Despite it being minus 10C all night, it still hadn't frozen right through which left me with a perfect "cavern" into which to insert the candle. 
As you can see, the tonttus were overjoyed and came rushing over to warm themselves in the heat.