Our active activity was "The Minutemen," a game we made up way back when we did our US History megaunit.
In this game, you wait until your kids are least expecting it and then you attempt to startle their socks off by screaming, "The British are coming!"
They then have 60 seconds to grab something that represents their gun, and something that represents their powder (usually something sack-like). Or you can simplify it and just do the "musket." We had enough kids that I just had them grab a nerf weapon for a gun.
For our art activity, we made butter. It ended up being more active than artistic (shaking a jar of cream), but I just realized that next week I have 2 art activities, so I guess it all evens out (you can tell how much I stress about these things)!
For our snack, my friend from Boston made Boston Brown Bread, and we ate it with yummy fresh butter~ and yummy it was!