As a weapon of precise aim, I'm often associated with a board on a bar's wall or with the toxic potential of a jungle frog

Thou see'st the shimmering sheet that shrouds the earth? Doth dance in sunlit splendor yet vanishes in warmth. Cold comfort to those who dare tread its fragile form.

Where do rainbows go after being arrested?

Bambi's rabbit friend does this with his foot.

A quiet swell upon the land, too small for peaks, yet still I stand.