Depends on the stage of life. Lots of Saturday morning cartoons, and even now when there is a new episode of X-Men '97 I watch it on a Saturday morning.

Assuming you mean less than ~10 years old: Wake up, get cereal (or real breakfast if someone else is up and making it), watch TV or play games (C64, Amiga, PC, or Atari 2600 depending upon when we are). Chores. Maybe run around outside doing something in the yard/woods. Read. Homework, if I had any over the weekend.

I mostly lived too far away to go hang out with anyone my age and was bouncing back and forth between parents' houses every other weekend. On rare occasions, I might spend Friday night at a friend's house if I was allowed (parents would sign a thing I give to the school that also signs it so I can take the bus my friend used instead of mine). Definitely not routine, though.

Get up, fight with sibling, get ready for orchestra. Go play terrible music for 3 hours with other sullen children. Come back, tiptoe around dad who may or may not have already left the house. Bit of TV, bit of playing at the park. Go see my nan who would have cooked something amazing. Back for dinner, where dad may or may not be present. TV then bed

We were not allowed on the computer until a certain time so I would be incredibly bored watching shit on TV until that time. Then I went on the computer.

When I was very young I would play outside, but then we moved to a bigger town and there wasn't really much to do outside.

I don't think there was all that strict a routine to be honest. I would lie in as much as mum and/or plans would permit, get up for breakfast, get myself clean, and then it all depends on what I'm doing for the day. Playing rugby and attending church would have been the main weekend things with actual deadlines for being somewhere for a decent chunk of my childhood

As a kid, Saturdays were usually an early start because we would have activities/sports, then we would go shopping and visit relatives. We were usually home for the Brookside omnibus - I doubt either of those words would mean much to young folks today.

Sundays were the lazy day for us, and still is a bit for me. Although these days I sometimes like to get up and go for a long walk when it’s quiet on a Sunday morning.