i was wondering, does anyone know if any 3rd party manufacturers or whoever really, make lens hoods for cameras like the panasonic gs250? thanks

Well here's a very well described adn illustrated example of a make your own:

http://www.sticktowhatyouknow.com/bts/mattebox/index.html#


I've also seen people use pill bottles with the end cut out.. the mouth of the bottle is about the same size as as a lense filter for your cam. remove the bottom of the bottle and paint it in flat black... then attach it to your filter (use a cheap-o filter and hot glue the hood to it)