I've come across the same problem with my sons. "Mom, I have nothing to do." "Mom, i'm bored." "Mom, what can I do?"
I am so tired of it!
I came across this blog on the almighty Pinterest. It has free printables and cool ideas for a "Mom, i'm bored jar."
It has chores and fun things to do, so its not all bad. It turns the "B" word into a game and your house could be cleaned at the same time.
For the free printables and ideas check out this webpage.