There was a Kaggle competition on this subject a couple of years ago, plenty of interesting solutions : Packing Santa's Sleigh - https://www.kaggle.com/c/packi

There was a Kaggle competition on this subject a couple of years ago, plenty of interesting solutions : Packing Santa's Sleigh - https://www.kaggle.com/c/packing-santas-sleigh https://www.kaggle.com/c/packing-santas-sleigh