Have an old PC or GPU sitting in your closet collecting dust? List it here so the devs can peruse what the community has that they could potentially use to aid the development process. To be clear all listings should be donations only, this isn't the place to sell your 1080 so you can get a 1080ti. Devs if you have something in particular you are looking for let us know we can probably track down what you are looking for in our local craiglists and community networks or PC shops so you can purchase (or have it donated) from across the country. 40 eyes are better than 4.
I've got a ATI sapphire 4870 GPU sitting in a box, probably a 7870 box actually (it's replacement). It was purchased in winter 2009, never overclocked or modded. Not a modern rocket ship by any means but I was pretty darn happy with it.