I went out of my way to find a slot-loading DVD drive. When the drive is mounted vertically, ejected discs will fall out and possibly roll away on their own.

I went out of my way to find a slot-loading DVD drive. When the drive is mounted vertically, ejected discs will fall out and possibly roll away on their own. That just leave a hopper to hold the queued discs and one moving piece to reposition and insert the disc far enough for the drive loader to grab it.