(Some good business opportunities here.)
Element trading cards that contain a sample of the element (preferably the same number of atoms - if foils of the same thickness were used the size would indicate the atomic size)
Guidebolts - bolts where the central shaft extends slightly beyond the threads (which would make starting the nut much easier & prevent cross threading (this should have been invented centuries ago - why aren't they commonplace?)
The Politics-Free News Network (All the News You Want to Hear)
A 3D-printable model of the Key Bridge
Bobby