Generally, you keep photographs in a cool, dry location, and keep them away from direct sunlight. Most other objects require some form of climate controlled storage. It could be in a closet, cabinet, etc. Not a garage or basement, those tend to be too humid.

We have photographs that are 100 years old. I have floppy disks from the 1980s that can still be read. Books from the 1800s. Tools over 100 years old.