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Look around for trees with thick canopies—these will provide the best cover. Since you'll be well above the average person's line of sight, the person hunting for you will likely be too busy checking all the usual ground-level spots to figure out where you've gone.  If you're perched on one of the lower branches, don't let your feet dangle where they can be seen. The same basic rules of hiding apply when you're in a tree: remain quiet and still. Rustling leaves can be a dead-give away. You don't actually have to get inside the bush. In most situations, simply getting low and staying behind it will be good enough. Just like with trees, though, avoid making any sudden movements that might cause the bush to shake, or you could end up blowing your cover. Watch out for bushes with thorns or spiky leaves. If you're not careful, you could get scraped up as you climb in or out. These places tend to be dark and a little scary, which means the person looking for you is less likely to venture into them after you. Best of all, there's often so many tools, vehicles, and pieces of equipment around that you'll have access to multiple hiding spots within your hiding spot.  Don't hide in a shed or garage on someone else's property. You could get in trouble if you're caught trespassing. It's not a good idea to hide underneath a car or truck, either. On many houses, the areas under the front and back steps have open spaces built into them for storage. Look for a way to get under the porch or deck of the house where you're laying low. There may be a small door or gate, or you may be able to squeeze into an opening around the edge of the house. Watch out for potentially dangerous creatures while you're down below. Dark, damp spaces are often home to snakes, spiders, mice, and other creepy-crawlies. Fallen leaves make excellent natural camouflage. Dive into a freshly-raked mound and pull the loose leaves on top of yourself until you're completely concealed. Your friends will never suspect a thing—unless you decide to pop out and scare them senseless!  Drop a rock or stick into the leaf pile before you climb in to make sure there are no wild animals already hiding in it. Leaf piles can be breeding grounds for mold and bacteria, especially when they're wet, so avoid completely covering your face and try not to spend too much time inside. Darkness is the ultimate concealment. If you have nowhere else to post up, stick to the shadows, where you'll be practically invisible to your pursuers. Even if you're not completely blocked from view, you'll still be able to fade into the background and move stealthily from place to place.  Wearing dark clothes will help you blend in with your surroundings even more. If the person looking for you is using a flashlight, try to find a large object to stand behind when they get close.
Climb a tree. Crouch in a bush. Retreat into a garage or shed. Sneak under the porch. Lie in wait in a pile of leaves. Move under the cover of darkness.