I work in a company where I can afford to sign my achievements so in my case, I put in comment a small code in one of the pages this:

                                                     ___
                                                  ,o88888
                                               ,o8888888'
                         ,:o:o:oooo.        ,8O88Pd8888"
                     ,.::.::o:ooooOoOoO. ,oO8O8Pd888'"
                   ,.:.::o:ooOoOoOO8O8OOo.8OOPd8O8O"
                  , ..:.::o:ooOoOOOO8OOOOo.FdO8O8"
                 , ..:.::o:ooOoOO8O888O8O,COCOO"
                , . ..:.::o:ooOoOOOO8OOOOCOCO"
                 . ..:.::o:ooOoOoOO8O8OCCCC"o
                    . ..:.::o:ooooOoCoCCC"o:o
                    . ..:.::o:o:,cooooCo"oo:o:
                 `   . . ..:.:cocoooo"'o:o:::'
                 .`   . ..::ccccoc"'o:o:o:::'
                :.:.    ,c:cccc"':.:.:.:.:.'
              ..:.:"'`::::c:"'..:.:.:.:.:.'
            ...:.'.:.::::"'    . . . . .'
           .. . ....:."' `   .  . . ''
         . . . ...."'
         .. . ."'     < > with love by Axel Rayer
        .   

Or sometimes in a "readme" or something like that ^{^}