Elffers was trained at the
Academie voor Beeldende Kunsten (Rotterdam) as graphic designer. While at Rotterdam, he developed a more expressive and individualistic style, often combining hand-drawn typography, illustration, and vibrant colors. From this, his development turned him into a versatile artist: illustrator, painter, printmaker, book binding designer, sculptor, ceramist and photographer. After Efflers' time at Rotterdam, he became an assistant to
Paul Schuitema and
Piet Zwart. Besides performer from 1970 to 1976 he was lecturer in monumental art at the
AKV St. Joost in 's-Hertogenbosch. Elffers received the State Award for Typography for his typographic work. Elffers' work is included in the collection of the
Joods Historisch Museum. Elffers was also involved as a designer at the
Rijksmuseum Amsterdam, both in the graphic design of the museum and the exhibit design. Notably, he worked on projects like the 1965 exhibition "40 Years of Lace," showcasing his skills in integrating visual and spatial design for cultural institutions. His broader career at the museum is less precisely documented, but his association with this work places him as a key figure in museum design during the mid-20th century. Elffers' work was included in the 1939 exhibition and sale
Onze Kunst van Heden (Our Art of Today) at the
Rijksmuseum in Amsterdam. == Family ==