Normally I like to invent products/properties etc when it comes up in my art! Rachel, I suppose, is the exception, since she's from this world but viewed from various moments in time (mainly the 1990's). But I like the thought experiment!
• Rachel was a bit of a nerd in her college years (the early 90's), so I imagine she'd enjoy shows like Star Trek, Buffy, X Files etc. She's also been known to game (usually with other people), enjoying multiplayer games like Street Fighter and Mario Kart.
• Dinky loves cheesy 80's action and sports movies. So they'd love movies like Rambo, Rocky, The Terminator, Bloodsport etc.
• Thistle (A rare mention I know) is a somewhat terminally online zoomer. I could see her being an absolutely toxic troll on games like Dead by Daylight and Overwatch.