A very short riddle just came to my mind, let's see if it can be cracked:
see me once, food can usually be found
see me twice, thundering typhoons all around
hints are coming daily, if needed. Good Luck!
Although this riddle is already solved, here is a hint. (For the people reusing this riddle):
see me once, you'll need more than your hands
see me twice, experience adventures in all kinds of lands
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