Yeah, it is a bit 'cliche' and both been used heavily. It is a hard one because Preppers prepare for all sorts if you were to ask them and they do allsorts of different things and have so many different skills and practices that could be represented in a logo.
I think the common goal is to survive and see tomorrow, so maybe a group of people walking towards a new dawn with their bug out bag on their back and tools in hand. Maybe a derelict or destroyed gray foreground and colourful horizon to show that they leaving something worse behind (for whatever reason) and are ready to build something better? Could incorporate the cliches but have them included in a subtle way? Just off top of my head but now I'm thinking about it, dayum! Hard one!