Well, putting together a bug-out bag for fun sure sounds like an interesting hobby. You never know when the apocalypse might hit, so it's better to be prepared than sorry! As for recommendations, I suggest including water and energy bars/dry fruits that have a long shelf life. Additionally, include fire starters/matches/lighters to start fires as well as a reliable and sturdy knife or multi-tool just in case you need to hunt or slice bread(picnics in the face of Armageddon don't sound like much fun). Lastly add some basic first-aid stuff just in case something ticks off Shiba Inus who plot to take over the world...anyway hope my suggestions are helpful and else don't mind- keep having your fun!