Now that I\'ve fallen off a cliff to my death... again... I have a few ideas:
1) Hiking Boots - Same as leather boots, but with added traction. They could allow the player to climb up/down steeper terrain than before, and slow slipping on very steep terrain. (giving time to jump back to safe ground) Cost should be only moderately greater than the regular boots.
2) Rope - One could tie a length of rope to a tree or boulder and use it to repel off a cliff. Or, you could tie party members together as a safety measure. Cost should not be cheap. (good rope was valuable before modern times)
3) Climbing Harness and Grappling Hook - This could be equipped to the belt slot, and would give the player the ability to get up to rather out-of-the-way places. Obviously, this would require its own skill, and should be quite hard to learn.
4) Trail Mix - Cheap snack food that once eaten temporarily lowers fatigue caused by jogging. Would allow long trips with fewer stops.
5) Faster Walking/Running- Ok, not actually equipment, but needed. Characters walk and run unrealistically slow. Granted, we don\'t want people zipping all over the place, but you should be able to walk around at a much faster pace. (the monsters are too slow too...) Theoretically you can improve your stats to fix this, but I don\'t think you should start out so pathetically slow. Additionally, it would be nice to be able to sprint quickly away from enemies. Running should be a much faster. (and use up more stamina)
A few of the things above could be done rather easily (like the boots), but others require the implementation of the climbing skill. The grappling hook would also be a tad problematic with the current frequency of getting stuck in walls...