SALT LAKE CITY (AP) — Campers and outdoor enthusiasts are embracing a unique way to sleep under the stars while in the mountains or at the beach — dangling between trees on hybrid hammock-tents that get them off the ground and into portable treehouses that soothe their inner child. Some of the gravity-defying devices were on display this week in Salt Lake City at the Outdoor Retailer show, which brings thousands of people for a business-to-business expo that allows retail store owners to meet with companies and manufacturers that display products. The so-called tree tents are still too small of an industry segment to track sales separately.