Out of curiosity, the deskmat design with orbits and timeline of major events: there seems to be a missing orbit for Neptune, which was one of the mission objectives for Voyager 2 and where a number of discoveries were made. Was that a design decision? I see Earth -> Mars -> Saturn -> Jupiter -> Uranus -> ... The end point seems to symbolically represent the current location outside the solar system, past the heliosphere. Alternatively, adding rings to "Mars" on that drawing could make it right in terms of the science goals for the planetary fly-bys by turning all the planets shown into ringed systems (which Jupiter, Saturn, Uranus, and Neptune have).
(P.S.: background in astrophysics, and I'm getting a couple of these mats for planetary scientists.)