(Thanks to Rus Bowden for the links.)
... A Poem by Dennis O’Driscoll.
... Some Poems with 3-Line Stanzas.
... Gate C-22 by Ellen Bass.
... Trillium by Fleda Brown.
... Umberto Saba's Bleat. (I don't try to avoid the first personal pronoun, but I don't tend to use it a starting-point. If it pops in, though, I let it stay.)