that would be awesome, i'd take what you are willing to give (and get rid off), because i might need some pcs for future maming and it can't hurt to have some in the back of your hand. i will have to choose a small cab for eurocade to have enough space in my car 
THX ETIENNE!!! 
Yeah, the are just eating space in my "attic storage tm"

so if i can donate them to a guy who will use them to save a classic from the past, than i feel good about it.
I have many time customers where i "renew" networks and PC's so many time there are free leftovers that otherwise will go into the trash.
these pc's dont have any value for "standard" people anymore, but i hate to trash something that is working.
So many times i take the leftovers with me, and make somebody happy with it.
i did some comparing and i can get 15 - 25 € for them, but i rather donate them like described above.
like the laptop screen from Andre, same story, old laptop, slow and leftover at a customer, so i stripped it and saved the screen, memory, hdd, keyboard, and wifi module, trashed the rest

talking about space, i can ofcourse strip them, and just bring a box with 3 mainboards, powersupplies and some videocards

the cases i can ditch, or do you want to use the metal mountings for the cards ?