When checking out the reviews on the iHome and Logi speakers on Amazon, thanks jsh1120, I saw that the AYP portable speakers got rave reviews. For $12.99 is it to good to be true ???
http://www.amazon.com/AYL-Portable-Speaker-System-Tablet/dp/B0052NZYXI/ref=cm_cr_pr_product_top
The only caution I'd mention is that reviewers tend to judge a product like this in comparison to what they experience before they added the speaker. Not surprising. As a result, though, external speakers for phones tend to be evaluated in comparison to the speaker the phone includes. And not surprisingly, almost anything sounds good in comparison. The iPad on the other hand, has a better speaker than my cell phone so improving on it requires a somewhat better product. Just something to keep in mind.
On the other hand, the AYP may be a very good speaker at a clearance price. Not much to invest to find out.
Finally, I should also have mentioned a nice little speaker I got for my wife's iPod that works quite well with the iPad, as well. It's from Satechi, sells for about $25 and has the same "pop up" feature as the iHome speakers that improves the bass response. All in all, if you're looking for something even more portable than the iHome speakers and don't care about the stereo separation, it's a good choice. My wife and daughter use it with their iPods constantly and I've used it on occasion with the iPad.
http://www.amazon.com/Satechi-ST-IPOP-Portable-Rechargeable-Speaker/dp/B003Y7PXSK/ref=pd_sim_e4
Finally, I should mention one other annoying little aspect of the speakers designed specifically for the iPhone/iPod/mp3 players such as the Satechi above and the AYP's (I'm guessing from the photos.) The usb/3.5mm cable is only about four inches long. As a result, using them with an iPad will require an extension cable. You can get such cables cheap, but the only one my local Radio Shack had in stock was $10 for a 10" extension cord. It included a volume control and for convenience sake I bought it. But be warned that you'll need such an extension if you're going to use a speaker designed specifically for the iPhone/iPod with the iPad. Otherwise, you'll have to keep the iPad flat on a desk/table or have the speaker hanging in the air.
P.S. BTW, it appears from one Amazon review of the AYP speaker that the use of an extension cord is not an option. That would be a dealbreaker for me.