How can I reclaim my mind from sheer idleness to save it?

See below. Several companies have developed applications specifically to challenge one's mind: "brainchild" by gameloft & "brain trainer" by luminosity.Com. I'm certain many others exist. Sudoku & its variations & picture puzzles are also good. Reading. Writing. Composing poetry/music. Learning a foreign language. Learning to play an instrument.
Games!! Word games, card games reading and puzzles help. There are lots of computer based, mobile apps or paper games out there!