My oldest son was really into Cub Scouts when he was little. One evening when he was nine, as soon as we got home, he started pulling food out of the fridge.

"What on earth are you doing?" I asked.

"I'm going to put all the food from the fridge into the root cellar and then shut off the main breaker," he explained. "We're supposed to not use any electricity for a week."

We reached a happy compromise.

I got his Cub Scout book and read the requirements, which were to reduce electricity use for a week, not eliminate it entirely. I explained that we were not shutting off the main breaker and that he was putting all the food back in the fridge. We got into a lengthy argument over this, but eventually, while making it clear that I was obviously the lamest parent he knew, he agreed that we would simply not use any forms of electronic entertainment for the week.  

We don't have video games at my house, but my kids and I have been in the habit of watching an hour or two of TV most evenings. So, that week, we spent time instead reading, playing games, drawing, and playing musical instruments. All three of my kids were elementary school age at the time, but there were very few fits about the lack of TV. I had to be a little more engaged, but we had fun.