It doesn't get much better than nightime in the Summer, especially if you're able to peer into the sky with a telescope.

The Celestron 21035 Travel Scope is a great little scope that allows for 20x magnification, allowing you to see the moon, planets, or even distant wildlife.

For only $65 you get a telescope, tripod, and carrying case that will allow you (or the kids) to easily setup and use.