no humidifier but internet, out in the wild.
If you want to rehumidify your weed, put it into an enclosed space (I.E away from the ambient humidity) and place something organic that has been freshly cut into the space. You'll have to use enough organic matter and be proportionate to the space used, but generally 1-2 freshly cut weed leafs (individual leafs, not whole fan leaves) per 3/4 filled quart jar is enough.
Don't leave it in there for a long time, mold can form. Generally leave it for like.. 2-3 hours, then check it, before putting it in for another 2-3 hours. It'll become substantially wetter than it would take the same amount of time for it to dry.