I love Repair and Apple Products. There isn't a device I own that I haven't cracked into. I use a 2011 21.5" iMac, iPhone 8 Plus. I also have many old broken phones that are sitting in my proud collection. Below are some images of devices I have used.
More about them:
iMac - My iMac is from 2011, but yet I just bought it this year, if you have an old computer, there is no reason to get rid of it, upgrade it. Mine has an astounding 16GBs of RAM and an SSD. An SSD will make you computer 10+ times faster. With speed like this doing heavy tasks like photoshop is a breeze.