This small trick can hellp you to collect the same gift twice and increase your items in the gift box . (Special thanks to sujeet). Follow these simple steps -
1. Start you farm ville game by going to http://www.farmville.com.
2. Simultanously log into your facebook and go to your farm ville game requests.
3. At the top right corner of the farmville.com page you will find the notification of pending gifts ( see figure)
4. Click on it and accept the gift by clicking "accept" .
5. Now go back to your facebook page , go to the game notifications and there you will still find the same pending request that you have just accepted through farmville.com.
6. Click on accept button and hurrrray you get the same gift again.
I am working to find more flaws in the game so dont forget to regularly check back the blog because hackingalert has bigger "mistry gifts" for you than zynga ;-)