Here were a few ideas I would probably have in my emergency bag:
Energy: Solar cooker: http://www.gosunstove.com/ USB charger powered by fire: http://www.flamestower.com/ Battery: http://zendure.myshopify.com/
Communication: Android phone: Samsung Galaxy S4 Active or something tough Serval project: http://www.servalproject.org/ Network scanner: https://play.google.com/store/apps/details?id=com.overlook.android.fing&hl=en
Technology: RaspberryPi wether station: http://airpi.es/ assortment of chargers and cables Walkie talkies Radio scanner USB drives 3G MiFi Dongle e.g. http://store.three.co.uk/view/plan/MBBD12062013T160817?manufacturer=Huawei&deviceType=MBB_DONGLE&id=1189
Books: Ray Mears books: http://www.raymears.com/Ray_Mears/Ray_Mears_Books.cfm Wild edible foods: http://sergeiboutenko.com/my-book-is-out/
Sleep and shelter: Nube hammock: http://sierramadreresearch.com/shop/nube/
Tools: Bush craft knife Flint and steel Para cord Tarpaulin: http://bushcraftandsurvivalskills.blogspot.com/2012/03/what-is-best-tarp-setup-steps-to-take.html Torch