Our current version is “Rev 8” of a resin-printed 3D model. We’ve also used a 3D filament printer but prefer the strength and heft of resin. For the strap, we’re using dual-lock velcro and exploring stretchable nylon reusable cable ties. Adhering the bracket to the back of the laptop display is tricky. We decided early on to neither use anything opaque (our students are very proud and protective of the expressive “real estate” of their laptop backs) nor magnets (even if any fear is unwarranted). We’re currently using mini-suction cup pads and found that they stick better to some surfaces than others. The option of a reusable clear adhesive film completely solves any problems with minimum evasion.