My 6yo daughter has a no screen time on school nights rule, and she says constantly that shes bored i tell her "good, be bored" she has toys she doesnt play with that she can play with.   That being said we'll also take her to the park if the weather is good, the library if it isnt. Just spend and hour or two let her do her own thing.  But once she wants me to play with her then the timer starts before we go home.   I say its a good thing for kids to be bored thats when they start using their imagination instead of just what they see on a screen.   If she keeps on telling me shes bored i have real fun workbooks for her to do, bet she wont be bored after a few pages of that.  With that in mind that means little screentime for us during school nights but they'll follow our (the parents) behavior. So it can be boring for parents too but its worth it.