Jennifer wrote to me:

From left to right:
-Valerie Vann's 4-card cuboctahedron
-my 2-card tetrahedron (with locking mechanism similar to drywall anchors!)
-my 3-card 3-D ring with dogbone units (info will be on my web site)
-my 12-card sonobe "Jackstone" (cube with square pyramid on each face)
-my 12-card woven cube (not even sure I will go into the technique on my web site, it's not pleasant)
-6-card open frame tetrahedron made with Francis Ow's 60 degree unit
-my 30-unit sonobe icosahedron, points outward
-my 30-unit sonobe dodecahedron, points inward
-Valerie Vann's 12-card open frame cube
-my 30-card icosahedron with diamond-edge units (info will be on my site)
-Jeannine Mosely's 12-card 1:sqrt2 rhombic dodecahedron (from text instructions on origami-l in 1994) --this one uses glue, which is absolutely not necessary when the model is just sitting on the table.
-my 12-card octahedron with dogbone units

As I have had little contact with other designers of business card modulars, I have no idea if any of my designs are in fact parallel inventions. I have searched the web for pictures of business card designs and found nothing outside of Valerie Vann's pages and Jeannine Mosely's Menger Sponge.