I've finished assembling a kit for NXT 2.0 owners that allows them to build models designed for the original NXT Retail Kit.
My Unofficial NXT v2 to v1 RETROGRADE Kit is available and shipping now. There are dozens of fantastic books on the market geared towards the original NXT set. With your NXT 2.0 and this kit, you'll be able to build all of them!
Please pass the word on to anyone who might benefit. It is priced similarly to LEGO supplemental kits and also includes the elusive sound sensor for your robots listening pleasure. http://inanimatereason.com/shop/viewitem.php?item=NXT21KIT