Do do you need drink ideas? I love themed drinks & I made a fun 4th martini last year. Let me find it...
ETA: Okay, I can't find it, but I'm pretty sure it was just vodka w/blue curaçao & then you add a bit of grenadine (it sinks). I chose to garnish with star fruit. They were a hit.
ETA: There are some really cute 4th themed sangria recipes too!