new to the game, looking for some parts

so i just got my first bike, a 2000 GT saddleback for 60$...i know its nothing special, but it was enough to get me rolling...i figgure once i get a taste ill man up and buy a real bike...anyways some parts are rusted out/beat, so im looking for anything you have laying around

the front brake is broken...i dunno what i gotta do here a wire tie has it working right now hahah...bikepedia says "ProMax linear-pull brakes, Shimano Altus C90 levers" for brakeset
also the rear brakes might be about to go

id like some new grips and bar ends

saddle

and pedals maybe

the derailers dont work great, im hoping some wd40 might fix this

anyways, lemme know what you have sittin around not gettin used, i can get you a couple bucks and you can get another kid hooked on mtb