Open the forward hatch on the plane from cockpit (little lever) lock it in place with hairclip or it will keep falling shut, get the stuff from the forward hatch. Get the key from the bag in the tree top, use the glass shard found in the plane on the floor to carve a sling shot from the branch, use the glass on the pilot goggles to cut the strap, combine strap and slingshot. Shoot at the bag and it will fall. U will get the key from there. Fix the key in the magnifying lens+crank shaft (placed in the light beam next to the plane) use the glass to trim of the edges of the weld on the key, now it will fit in the locker in the plane. Get the stuff from the locker. (I presume U got the toy dog and the other stuff from the plane here) Go to the quicksand, spray the rock with anti glitch spray, fill the dog with whisky, start the dog, the monkey will drink the whisky the dog....eh-rm..squirts on the ground, take monkey and climb up the rock.