Sims Web Return
Find a box, pack it and send it with the free prepaid UPS shipping label. They can recycle most electronics you can think of, not just computer stuff.
"If you’re not using that electronic device anymore, send it to us! We’ll make sure that your product is safely recycled at one of Sims Recycling Solutions domestic processing facilities where a zero-landfill policy and proven sustainability give you peace of mind in knowing that your electronics will be managed responsibly. The cart will accept 10 items and generate a label for each item. Individual items may be combined into a single package with a weight limitation of 70 pounds per package, and any unused labels may be discarded."