I have had laptops appear out of thin air. I hate this feature and use a mod to stop it from happening, as I don't want my sims using computers outside work- or aspiration- related tasks, seeing them randomly pull out a laptop they are not supposed to own nearly made me turn off the game, because I am sick and tired with sims obsession with modern technology. Side note: I love the update that made computers claimable, now I can just lock them for everyone and be in peace.