The shape of a “Bubble” by default is always spherical. Right? But the kit you see here will actually let you make bubbles in various different shapes. They include 3D “squares, helixes, banana shapes, and even a four dimensional hypercube.”
The kit with 72 different parts allows you to create “the most geometrically exotic creations of bubbles” ever. Called the Zometool Crazy Bubble kit, it is available here for just $11.99 for the whole set.