well, you could use iron-on transfers, which you can buy at walmart or hobby lobby
i used transfers to make an explodingdog tote, it turned out nice-
or you could stencil (there are nice tutorials on here for those) it on

ok, i did a bit of searching and i found some instructions for making a television aquarium if you're interested.

http://www.vafishfreek.com/TVhowto.html

a picture of a smaller tv tank
http://www.aquariumadvice.com/download.php?id=1239

how big is it? a lady around here used to turn old televisions into fishbowls/aquariums