xyz+ cell: Kwang, Ilan, Max
      multiple inputs, outputs
      multiple axes
      scalable design
      drive scheme
      construction
      open/closed-loop
      sensing
      additive
      subtractive

   active extrusion: Jonathan, Max, Steffen
      sensing
      control over shape/size/direction
      dynamic material mixing
      material choice(s)

   digital assembler: Scott, Marcelo, Keywon
      GIK/LEGO
      multi-material
      pick-and-place
      electronic production
      snapping
      binders

   active elements: Skylar, Steffen, Steve, Taro
      contain logic, motion

   ?
      duct tape circuit cutter
      worm, inverse worm