The original LEGO iPhone Cable Protector by wkkpatrick is great for Lightning cables made by Apple, however I purchase "U-Youse" brand Lightning cables from Five Below. (They sell a 10-foot cable for only $5!)

The diameter of the plastic shell around the Lightning connection is larger on the U-Youse cable, so I scaled wkkpatrick's design (using CURA 3.6) to fit. In addition, the design was modified so the Lightning connection sticks out more. This way, an iPhone inside an Otterbox Defender case can be connected.

Note 1: wkkpatrick's design is compatible with LEGO bricks, but this modification is not.

Note 2: U-Youse also makes shorter length Lightning cables with metal tips and/or fabric covering. (I have not tested those.)

Note 3: The text was added with 3D Builder.