Between Barbie’s Dreamhouse and the online MyScene room makeover game (click here for a boost of nostalgia-induced dopamine), I was *basically* an interior designer by the time I turned eight.

A mom is so enamored with everything from the year 2000 that she’s turned her home into a Y2K-era-inspired playground. Jemma Murphy, 33, from Solihull in Warwickshire, England, even pulled off ...