The idea is to grow fruits and vegetables that last long and can be regrown. You also want a way to grow them indoors easily and effortlessly. That way if your in an apocalypse scenario you can have food, while in constant shelter. Like a bunker.
ElectroCulture Gardening
Water Sources
You want to find a reliable water source, and then you want to clean the water for use. you can use water filter technology or natural methods to clean water. Even after filtering your water, boil it just to make sure any bacteria is dead. Keep your water supply out of direct sun light. Find Shade to help keep water cool. Try filtering your water supply more then once or twice.
Hydration Test: Press your thumb until it turns white. then let go. if it slowly goes back to red color. then you are dehydrated and need to drink water until your blood flows faster to your thumb.
Water Filtering
Water is everywhere. even in your urine. learn how to filter out the clean water from any liquid source like rain water or the ocean.
Physical safety is very important as well as a place to sleep.
Should try to avoid injuries. Wear protective clothing.
Medical Equipment
Tools
Heating
Cooling
Power & Devices
Urban Survival
Weapons
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Power Source & Electronic Devices
You want renewable electricity. Like solar power, hand crank, thermal. Electronic devices are very versatile. You want to make sure you got communications capability, direction capability, light sources, entertainment.