How to help in swing states?

With the nomination all but over, I've been thinking about the transition to swing states. I live in Texas, we won't flip blue this year.

I'm not going to travel anywhere but I've been trying to think of ways to help out in swing states but I'm drawing a blank. I might head down to the local democratic office next week and see if there's any ideas but I think they're focused locally.

Any ideas?