These seem like would be a good idea for BOBs, or even for hunker-down-at-home scenaries in case someone has to go out and the cell networks are down. Neighborhood watch would also be a great use for these, even if power and cell networks are still up, so it may be worth having extras on hand. What do you have/like? Recharging would be my main concern with these so something that takes standard batteries may be a good idea. Any other features that would especially applicable to preparedness usage?