An inovative idea for final year project

I have just completed my bachelor in computer engineering n doing my masters in same field.my team won the award for the best project of the year about 6 months ago.i can tell you to go for cloud computing based project which is directed towards low resource devices like PDAs n all.. you can provide various software n applications in your website which users can use for free..it will be like their own personal computer..we had used java n php combined..