Age apropriate of coarse
Wash dishes, do laundry, clean room, vacuum, rake leaves, shovel snow, wash the car, cook, read the bible, help getting groceries, put out or work in a family garden. take care of a pet. Give them responcibilities, guidence and your time.
I know it's not politicaly correct

but it not only keeps them from vegetating in front of the screen thing (TV or computer), It helps mom and teaches them valuable life skills.
Then. . .Join them in as many activities and spend as much time as you can with them doing something ,anything or nothing.
Visit musums, Art ,History, science.
Movies, theater and for those days when it just isn't fit to go out

play board games, work puzzles or just talk.
The more time you spend with them the less time they spend in front of a tube
Sincerely His
Theirs (The Children)
And yours
Cliff.