Even though there are new ways of doing things, it's important to stay true to tradition. Avoid forcing your children to do things the same way you used to do them, but at least expose them to how things were before.
Explain to your kids how you used to communicate. Teach them letter-writing skills, for example. Show them that they can still achieve basic tasks even in the absence of technology.
Get them involved with "old school" games. Take them outdoors and play hide-and-seek. Get out the board games at family parties.
Sensitize them to the simple fun they can have outside of video games.
If there's a power outage, you want to avoid having your kids see it as a catastrophe!