Here you'll find useful prepper gear that you will have a hard time finding elsewhere. Some of these items are more suitable to surviving specific disasters, while others are more general in nature.
As with all survival gear you want to ensure that it actually works when you need it to work. So any electrical or electronic gear should absolutely be stored safely in EMD-shielded containers. An easy solution to guard all your gear might be to just a few metal trash cans and store your whole Bug-out bag in that.
Just general advice to remind you that a solar storm or electromagnetic pulse is actually quite likely in your lifetime, and that electronic prepper gear could be rendered useless unless protected.