If you're the proud owner of an original iPad, and looking to replace yours as soon as the new model hits the street Friday, there are several options available for those who wish to recycle or sell their old electronics.
Apple itself. Apple will recycle any old computer, including iPads, whether they work or not. If it's still in good working condition and can be refurbished and reused, you'll get an Apple gift card for the value of your computer. You don't even need to do much work. Just go to Apple's recycling website, enter in the details of your old device, and they'll send you a box and a prepaid shipping label. Just pack up your old iPad, ship it, wait a few weeks, and you'll get a gift card that you can use at any Apple retail store or their online store.
Best Buy. If you're not willing to wait for shipping and you just want your old iPad or other computer out of the house, Best Buy will recycle it, often for free, or let you trade it in for a Best Buy gift card. Since Best Buy is an authorized Apple reseller, this might be a great way to get rid of your first-generation iPad and then walk out of the store with a new one.
eBay. The online auction site's new "instant sale" option (part of the eBay Green Team program) lets you get an offer from eBay itself on many used electronics. As of this writing, you can get $391 for a 64GB iPad in good condition. Shipping to eBay is free, and they'll clean your device of its personal data before reselling it.
Craigslist. Maybe you just want to sell your old iPad locally and not worry about dealing with companies or waiting for payment. What better place than your friendly neighborhood online flea market?
Earth 911. If you've been tough on your old iPad and it doesn't work anymore, you can find all of your local recycling options at Earth911.com. The site will help you make sure it gets recycled in a responsible manner that does not generate any harmful e-waste.