We can always recycle old technologies through the weekly DC E-Cycling Drop-Off. However, it is even better to pass those items off to someone who might still want them. My neighbor Daphne is getting rid of her slide projector and wrote me:
"I have been finding people who want slide sleeves. One great source is coin collectors for they use slide sleeves for their coins. I have given a bunch of mine to a retirement community's coin club for their members."
This innovative thinking is great. If the technology is still usable, you can sell it or give it away on Ebay, Craigslist, Freecycle, or one of the more specialized tech recyclers like Gazelle or BuyMyTronics. Reuse or recycle: it's all good.