Sleeping Pirate
One person is blindfolded, and she is the "Sleeping Pirate." Something is placed in front of her, like a candy bar. Everyone else in the group must move at least 20 paces away from her, and must then try to sneek up and steal the candy bar without being heard. When the pirate hears something, she points in the direction she heard the noise and whomever she points to must return to where he started. The winner is the person who steals the candy bar without being caught.
Seekers
One person is given a torch and must close her eyes and count to 30, standing at the base, which could be a bag or a tent. She is "it." All other members in the group must run and hide. Using the torch, "it" must try and find the rest of the group. As soon as she sees someone, that person is out. Members must try and reach the base without being seen. Wearing dark clothes is advantageous for this game.
Hug a Tree
The group is split in pairs. One person in each pair is blindfolded, and then led to a tree via an obscure route. Once there, the blindfolded person has to feel the tree, it's trunk and roots, etc. After about a minute, the other person helps the blindfolded person back to the starting point, again via an obscure route. He can even pretend to help her under an imaginary fence, or other such misleading ideas. The blindfolds are removed, and the person then has to try and locate the tree she was hugging.
Smuggler's Game
The group is split into two even teams. One team is the "smugglers" and the other is the "custom officials," or any variant on the names. The smugglers are given something they must try and get past the custom officials without being caught. This could be anything from a balloon to a ball, etc. They way the smugglers work is up to them. They can try and rush past the custom officials, throwing the ball between them, or one can hide it and try and sneak past the customs officials while the rest of her team make a diversion.