If you've inexplicably amassed some 8000 clear window pieces in your Lego collection, thanks to the design talents of Tobias Tøstesen you can turn them into a stunning see-through, floor-to-ceiling chandelier. This approach to decorating is far cheaper than a similarly sized chandelier made of crystal, but it's no less stunning.
And if it were to come crashing to the ground, you don't need to call in a specialised craftsman for repairs. You can just keep a group of kids busy for an entire afternoon while they rebuild it. It's win-win all around.