I did not think of it when I posted but something similar has been done before. There was a [TKC]Baseball Bat once, a long time ago.
Read about it here:
Topic: Do you like Baseball? So credit should go to
[TKC]LaVaPlaToZzI had that file once but I seem to have lost it and the download link does not work anymore. Does anybody still have that one???
What would really be funny if you could play like this and other players could see it too but the way the game works I don't see that happening soon... So for now this is nothing more than a funny gadget.
If you switch the .bes files for other .bes files and you change the 3 references in the ingame.txt where it now says lightsaber you can change your knife for any object. I'm not sure but if I remember correctly the knife was the only weapon where you could do that undetected.
Who can make something funnier than this??? C'mon, show me your creations...