Sporks are just a great invention! They're light and very useful. The spoon side might be most needed but the fork works great as well and the tiny knife does its job for basic needs. And you can also carry them in your hand luggage.
Coconut oil is the best overall fluid to moisturise your skin or use as basic sun protection. You can eat it raw or use for frying and cooking, as a base for your own toothpaste or basic cream for sore skin.
Pink Himalayan Salt
When sweating a lot and craving salty products, take Pink Himalayan Salt to get the right mineral combination for your body. Dissolve some pink salt in your water bottle to make daily consumption easy.
Healing wool is natural sheeps wool with residual fat content. It contains wool wax (lanolin) providing skin-care and anti-inflammatory properties. You can use it to put on blisters or under your backpack straps.
Homeopathy is a safe and effective way to treat various ailments from muscle aches to digestive problems. You'll find remedies in homeopathic pharmacies in Spain but it's advisable to bring them from home.
When hiking, starch can be sprinkled into the socks or shoes to stop the rubbing of your feet. Like vaseline, it reduces friction and prevents blistering and sores on your toes and feet.