"Buy these JAM Paper 5\" x 7\" Ivory Blank Flat Note Cards at Michaels. com. These plain cards may be simple but don't worry, they are far from boring! Because they are sturdy and reliable, these are perfect to use for invitations, thank you cards, letters and more. These plain cards may be simple but don't worry, they are far from boring! Because they are sturdy and reliable, these are perfect to use for invitations, thank you cards, letters and more. The creamy, ivory color adds a hint of…