Place 1 bottle of water into your back pack to keep yourself well hydrated through out your short hike. Pack more water if you plan to be gone longer then 1 hour.
Take along a tube of sunscreen on your short hike. The harmful rays of the sun can penetrate through the leafs of the trees to give you a nasty sunburn if you do not protect yourself on your hike.
Pack a first aid kit and a compass just in case of an emergency. You can never be too prepared even on a short hike; little mishaps can happen.
Place your sunglasses in the top of your back pack. During your short hike you may come across a clearing where the sun is shining brightly.