My previous dog loved to chase our cat. He'd be lying on the couch, and` she would walk up to him and start poking him with her snout to try to get him to run. He would either stay put or slowly slink away.
My first dog would make this happy grunting noise when she saw someone she knew.
My dog sometimes makes some adorable little yipping/whooping noises in her sleep.
She's also figured out that if she paws at my wife's lap when she's at her desk she can spin her around to force her to give her attention.
And when she wants to play she'll throw a ball at you. Or when she wants to play by herself she sometimes throws things down the stairs so she can chase after them.
She's got a weird mischievous streak, she sometimes steals random objects off the counter, doesn't chew or try to eat them, just kind of carries them to a random place around the house. Came home one day to a martini glass sitting on our bed, kind of impressive since her breed (malinois) isn't exactly known for having a soft mouth.
If you're napping on the couch, sometimes she'll come over and nibble on your nose gently if she wants attention.