First you nap. Then you read. Then you go for a walk. Then you have a beer. That’s one day on the beach. What do you do for the rest of the summer? And no, putting your face into Blackberry’s BrickBreaker is not an option. Channel your energy into a game of horseshoes; a set is inexpensive, transportable, and simple enough for intergenerational use. Royal Classic’s Championship set ($29.99 at Paragon, 867 Broadway, nr. 19th St.; 212-255-8036) is packaged in a handled case that’s relatively easy to schlep to the beach. For more beach and backyard play, click ahead.