Here's an in-universe toy I've mentioned before in one of my YouTube community posts: Glitzy.
Glitzy is a fashion doll by Whoopell (a nicer version of Mattel) that has been around since 1964. Each variant comes with different outfits and accessories and has a different theme, like Beach Bash Glitzy, Astronaut Glitzy, Wedding Glitzy, the annual Christmas Glitzy, or the more controversial dolls like Talking Glitzy, who was banned from doll aisles for saying "Math is tricky" - you name it, Glitzy's had many jobs - is there any she hasn't had? There are also Glitzy dolls of famous women, dolls of different ethnicities, and dolls representing famous characters, like one in an Indy dress that came with a very small plush of said character. And let's not forget about side characters, like her boyfriend Sean, sisters Meryl, Krista, and Caroline (formerly Elsie), and best friend Pidge and her husband Arkin.
Glitzy's been extremely popular with young girls, encouraging them to be anything their hearts desire, though boys and even adult men seem to enjoy her, too, and she's spawned various CGI movies on both DVD and streaming (though streaming is less common in the Sprout universe), a more recent live-action one, and 2D AND 3D shows. With how long she's been around, it's safe to say that Glitzy isn't going anywhere anytime soon!