Many people do not have a humidor and avoid buying more than a couple of cigars for a weekend at a time because they are concerned about their cigars drying out.
You should be concerned about the cigars, but not about the humidor requirement.
Here is a link to a basic method from Pat McLaughlin of Cool Material if you do not have a dedicated humidor but want to do the right thing for your cigars:
The only additional steps we recommend is to place the new piece of sponge inside a non-sealed sandwich bag inside the container to keep the sponge from direct contact with your cigars. Also, do not store your cigars in the refrigerator, freezer or in the sun.