That's actually a really cool idea!! It would probably have to some kind of furniture item you'd put in your house like the master duels you can get... it honestly would make training so much accessible and easier too.
I think kingsisle should add games, like dueling diego avaliable in housing, so you could play them anytime you want.
Many if not all of the game kiosks, including Dueling Diego, are available in the Crown shop for 2,000 crowns each. You can check the following link to see the individual games listed.
Level 45 Life Wizard