There should be some software that allows users to act together in a church virtually. There could be a graphical environment of the church and members could get together to listen to a sermon, either chatted or spoken. Each member could have a little avatar within the church. It would be a good way for people to interact religiously despite isolation.

I would like to see a small robot with wheels that had a camera. The camera would come accompanied by object recognition software. It would have some sort of small weapon that could kill various kinds of insects. You could program in ants or cockroaches and the machine would roll around the house or hunting down the insects for you automatically.