there's going to be tons of things. Small things such as cell phones, computers, and TV's they will forever be getting better. But that won't be the revolutionary technological advances. I see some revolutionary advances in the next 100 years such as, a cure for Cancer and Aids. Cheaper/faster forms of air travel. Self-driving cars, Robots that can be maids, and other tasks around the house.
100 years is a long time, and at the rate we're going it seems like all these are attainable in the next 100 years. As a time machine goes, idk about that. It could be possible, but will the world ever be ready for something of that nature? So many people would misuse a Time machine and it would be terrible for people to have the ability to do such a thing.