Kev++

boxes draws any kind of boxes around your text!

$ banner hello | boxes -d dog -a c
             __   _,--="=--,_   __
            /  \."    .-.    "./  \
           /  ,/  _   : :   _  \/` \
           \  `| /o\  :_:  /o\ |\__/
            `-'| :="~` _ `~"=: |
               \`     (_)     `/
        .-"-.   \      |      /   .-"-.
 .-----{     }--|  /,.-'-.,\  |--{     }----.
  )    (_)_)_)  \_/`~-===-~`\_/  (_(_(_)   (
 (                                          )
  ) #    #  ######  #       #        ####  (
 (  #    #  #       #       #       #    #  )
  ) ######  #####   #       #       #    # (
 (  #    #  #       #       #       #    #  )
  ) #    #  #       #       #       #    # (
 (  #    #  ######  ######  ######   ####   )
  )                                        (
 '------------------------------------------'

$ banner world | boxes -d cat -a c
               /\             /\
              |`\\_,--="=--,_//`|
              \ ."  :'. .':  ". /
             ==)  _ :  '  : _  (==
               |>/O\   _   /O\<|
               | \-"~` _ `~"-/ |
              >|`===. \_/ .===`|<
        .-"-.   \==='  |  '===/   .-"-.
 .-----{'. '`}---\,  .-'-.  ,/---{.'. '}----.
  )    `"---"`     `~-===-~`     `"---"`   (
 (                                          )
  ) #    #   ####   #####   #       #####  (
 (  #    #  #    #  #    #  #       #    #  )
  ) #    #  #    #  #    #  #       #    # (
 (  # ## #  #    #  #####   #       #    #  )
  ) ##  ##  #    #  #   #   #       #    # (
 (  #    #   ####   #    #  ######  #####   )
  )                                        (
 '------------------------------------------'