+1 for Montessori pre-school. Lots of manipulatives & life skills.
We utilized high quality kid videos & recorded programs that we prescreened for our son, and limited his access to them on a TV in the family room. When he was in grade school, we utilized some educational software that drilled skills in a fun way. We provided lots of books & read them aloud daily, even when he was learning to read. When he advanced to chapter books, we often provided its audio recording while he followed the visual text. We provided a dumb cellphone when he started activities separately from us, around 12 years old.
Other things we've done with varied success:
-put hard limits on screen time at home (changing with age, currently, video time is from 7-8:30pm and bedtime is at 9pm)
-I read to the kids every night at bedtime, despite all of them being big readers themselves--we pick a chapter book series together and I read a chapter a night, plus another 10 minutes at breakfast on school days
-kids are only allowed video games on weekend mornings for 2 hours each weekend day (or school holiday), and once they're off, they have to do other things
-no phones until 7th grade and then heavily monitored where no apps can be downloaded without parental permission (enforced on the device)
-limit my own phone use when with kids
-model low-tech leisure activities (I read actual books a lot, and lo and behold, so do my kids; DH bought some brainteaser 3D puzzles to do on his downtime; DH built a firepit for the backyard; we play a lot of Connect 4 and Chess with the youngest lately and played tons of Ticket to Ride with the oldest in years past)
-have family bike outings and similar things be part of most weekends
-have instruments even if we can't play them (and I've worked a bit at re-learning some of the piano I lost over the years and have improved) and use them in front of the kids
-bring paper and pens or things like MadLibs with us to restaurants on those rare occasions when we go out to eat, so there is something non-tech to do together while we wait for service
-we allow use of home computers for schoolwork and to practice typing/keyboarding and very rarely for math games, but not just to randomly scroll through youtube and the like
-no social media allowed for kids so far (our oldest is 12 and uninterested so far anyway), and we model by generally not using social media (no FB, Insta, Twitter, etc for either of us, although I do use pinterest sometimes)
That said, DH loves Alexa, of which we have a few, and the kids use it to play music, to play ambient noise (rainstorms), to ask it trivia, to set timers for brushing teeth (personally I always ask it to play "Hit the Road, Jack" for toothbrushing b/c that song is 2 minutes long), and other small things.
I also do not limit the kids in video game play or tv watching at other people's houses (at playdates, for example). I don't want their friends to disinvite them just for not being able to play with them.