Anyone have any idea where i can source broken macbooks besides ebay? I need specifically macbook air 13” ones in the color space grey, they are getting super expensive on ebay, even the broken ones. And i need a few for this project

Try local laptop repair stores.

I have one nearby who has MacBooks of all sorts stockpiled, would probably be eager to let go of the broken ones!

Forgive the suggestion but Facebook marketplace?

hmmmm good question

maybe computer hardware marketplaces on reddit? or universities getting rid of old equipment?