(Family Features) There’s no time like a hot summer picnic to let your patriotic spirit show. These all-American snacks featuring a classic favorite fruit – watermelon – are the perfect solution for nearly any summertime celebration. Watermelon is a patriotic picnic staple for countless reasons, not the least of which is that it’s a beloved treat that many people associate with memories from childhood. However, nostalgia isn’t the only reason adults are just as likely to gravitate toward watermelon at a summer event. Its sweet, cool and refreshing flavor also makes it a favorite for all ages. From a practical …