my friend wanted a nes lunch box so i made him one and he let me have the insides of it( it all works) and im wondering what to do with it

I have no idea what you're even asking.

I think he says he has a nes mobo.

I think (may be a big stretch here) that he turned the case of the NES into a lunchbox (great idea!) and now has an NES mobo that he wants to do something with.

You could...
Do a case mod (take the innards and stick them in something cool (preferably something shiny))
Make a portable (expensive because of screen and case)
Sell on trading post ($$$)
Give to me (because I'm awesome)

^^^^^^^^
what he said