NEW YORK — Lake life is not just a hashtag or a clever saying printed on a baseball cap — it’s a fully realized lifestyle. People enamored with lake life spend the summer with friends and family on their favorite lakes, passing the time by swimming, riding personal watercraft and drifting in floating inflatables. There’s also plenty to do along the lakeshore, such as fishing or walking along the water or wooded trails. Islands with sandbars quickly fill up with boats moored offshore and revelers who relax on the sand, play music, grill food and share cocktails, conversation and games. And as with any lifestyle worth its salt, lake life has generated its own unique accoutrements and memorabilia.