As a longtime employee, I think the 2-in-1 beach towel and tote bag, and Essenza citronella candles are two of the best things to get at Costco right now. Veronica Thatcher As a longtime Costco employee , I always look forward to seeing the new items that arrive on shelves. This month, the warehouse is stocked with seasonal items like citronella candles and beach towels. There are also some delicious-looking Kirkland Signature grocery items and premade meals. As a Costco employee of 20 years, I love being able to scan the shelves for all the best new items that come in. This month, the warehouse is stocked with everything from outdoor essentials and beach-ready finds to delicious Kirkland Signature-branded products. Here are eight items that caught my eye. I'm excited to try the Kirkland Signature sparkling energy drinks. The Kirkland Signature sparkling energy drinks come in tropical, orange, and peach flavors.…