Light and plenty of tools - the Victorinox Swisslite Pocket Knife is the perfect item if you want to hike with less grams. Some books suggest razorblades as a lightweight tool but it lacks the functionalities and comfort of this little gem.
The Petzl Nao Plus is a new headlamp which is able to adapt its light according to the environment which makes it a great headlamp if you need to see far but at the same be able to read e.g. a map at night. You can also set the levels of the lamp manually and adjust the levels via the Petzl software on your PC according to your needs. Moreover, you can also adapt the light with your smartphone via bluetooth. The review below is about the previous model of the Petzl Nao Plus. Beside the bluetooth functionality the new Petzl Nao Plus also features more Lumen (750 Lumen) than the old model.
Most of my gear is equipped with an USB connection e.g. my Suunto Ambit 2, my phone, my camera or my Petzl Nao headlamp. But hey, I always run out of battery after 2 or 3 days and there is no USB connection in the forrest in order to charge my devices.
I found a solution which could extend the usage of your electronic gear for a couple of days.
The Hilleberg Anjan 2 is actually a lightweight (1.8 kg packed) 3 season tent. However, I believe that this tent could also be used during the winter season if there is only light snow fall and no strong winds. However, I have not tested it yet myself (to be on the safe side, I would rather take a 4-season tent with me). Here you can see how the Hilleberg Anjan looks like pitched on snow.