Streamlined and abstract—inspired by botanical subjects yet interpreted with bold geometric symmetry—the floral images here from illustrator and designer Linda Ketelhut would be at home in an art deco skyscraper or a Frank Lloyd Wright house. Presented with envelopes in a bright blue, magnetically lidded box, these compact QuickNotes cards (4 × 5 inches) are ideal for dashing off short missives with a bit of sophisticated style.