Terahedron

             ^
            /A\
           //I\\
          ///I\\\
         ////I\\\\
        /////I\\\\\
       //////I\\\\\\
      ///////I\\\\\\\
     ////////I\\\\\\\\
    /////////I\\\\\\\\\
   //...

        A
       *I=
      **I==
     ***I===
    ****I====
KCK''_**I==_''
      - I -

       A
      /I\
     //I\\
    ///I\\\
KCK '//I\\'
      'I'

       ^
      /|\
     / | \
    /  |  \
KCK '-.|.-'

Slave I 
                        __
                     .,' ,'`.
                   ,'/  /    `.
                  / :__:       \
                 /  /  `.       \
                : ,'`.,' \_      :
...

And Veronica Karlsson's  'Llizard in the Morning' :

(Now that's what I call a diddle! ;)

This even wider one should be a little easier to see because I completed the
repetitions on the sides:

 :"""""""""""""""":"""""""""""""""":"""""""""""""""":"""""""""""""""":"""""""""""""""":"""""""""...

                 o
                 I                      o
              o /I                      H
              I/ I______,'_._"_-,-___o__H
              I /   ,Z           .|  H /H
             ...

                      /\  <<<<<           ()          [] >>>>>
                   ___||____|____  _______||____  ____||___|___
                  | ____    ____ || ____   ____ || ____   ____ |
        ...