Lexicon Recentis Latinitas, published by the Vatican, invents Latin versions of modern words and phrases, so students can refer to items that didn’t exist in the ancient world:

bestseller: liber maxime divenditus
car wash: autocinetorum lavatrix
Christmas tree: arbor natalicia
disc brakes: sufflamen disci forma
dishwasher: escariorum lavator
to flirt: lusorie amare
leased property: locatio in emptionem convertibilis
pinball machine: sphaeriludium electricum nomismate actum
refrigerator: cella frigorifera
to slack off on the job: neglegenter operor
television: instrumentum televisificum
traffic jam: fluxus interclusio
washing machine: machina linteorum lavatoria

These examples are from a selection published in 1991 in Harper’s, which said that 75 percent of the 18,000 entries in that year’s edition were terms that had never had Latin equivalents. I can’t find the whole book, but the Vatican website offers an Italian-Latin glossary with some entries in English (hot pants are brevíssimae bracae femíneae).