Normally, this weekend would be full of cookouts and crab feasts, afternoons at crowded pools and rooftop bars, or the first big trip to the beach. Even as Maryland and Virginia cautiously reopen, many will be spending this weekend socially distanced. Arlington National Cemetery, so often the focal point of Memorial Day commemorations in this area, is open only to family pass holders, for instance. But while we’re all separated, that doesn’t mean forgoing the unofficial start of summer: You can still enjoy the barbecue, books and refreshing summer drinks from the comfort of your home. It just requires a little imagination. Here are some ideas.