For me, the enormous thing is the blockchain. The innovation starts things out and bitcoin is just second. Everything that we do later on will be associated in the blockchain and that is the reason numerous activities are making coins individually blockchain.
I also believe that the "next big thing is the blockchain". Bitcoin is just an application of blockchain and as of now, I am thinking several industries that can boost using the blockchain technology specially in monetary and legal services because this is the industry where transparency is much appreciated.