i realize you want a new board. we all do. but at least you have one!
what is you current set up and explain why you have outgrown it..
there might be someone out there that will donate old gear to you, or maybe even money but i doubt it. in the meantime, while waiting for charity why dont you try to push yourself further on the board you have. try new terrain, try perfecting your form, style or even try going faster.