Mine are 5 (Reception) and 8, both girls. Depending on their energy levels, they jump on trampoline, torment the dog, draw and write (esp dd2), do a bit of homework (dd1), 'help' me cook, read, watch a film, etc
Or they have a friend over to play or, rarely on weekdays, play with each other (they play a lot together at weekends, but argue a lot during the week
)
Once a week, they have jazz dance classes. Once a week, dd1 plays netball. At their absolute peak, dd1 was doing 3 after school clubs, and dd2 one.
If either one is really tired after school, they flop on to sofa with a cup of tea, a biscuit and a TV programme. Then they feel better and run off to play.
I am sometimes talked into playing memory card games involving Disney Princesses with dd2, or helping 'make' something. But mostly, they like their own company after a day of non stop doing/talking!