The word USERS appears quite frequently in crosswords and usually refers to people who are online, i.e., using a computer or laptop. Many "passengers in flight" pass the time by using their laptops to write mail, play games, look at porn or whatever.
Freddie Cheng's Daily News crossword includes
High excitement: FEVERPITCH
Workout attire that became a 1980s fad: LEGWARMERS
Desire of one submitting a demo CD: RECORDDEAL
Bottom of a gym? SWEATPANTS (Get it?)
Debut time for many TV shows: FALLSEASON
"Extra-care items for movers"---and what the first words of those phrases can be---is BREAKABLES. This theme made me think of the $20,000 Pyramid tv game show: "Here is your first subject. Go!" "Umm...a fever...a leg....." "Things you break?" "Yes!"
"Hardest-to-find items for a collector" is RARES. "Rare" used as a noun? Not in any of my dictionaries!