OMG. Someone is giving you an iPad and you don't want it? It's not herpes man, it's an iPad. Talk about first world problems!
You can buy a replacement back for it - here's one I found from an Australian supplier: http://www.macfixit.com.au/shop/index.php?_a=viewProd&productId=1856
You can buy a replacement back for it - here's one I found from an Australian supplier: http://www.macfixit.com.au/shop/index.php?_a=viewProd&productId=1856