Virtual Reality and Augmented Reality technologies are improving at a rapid pace, quickly becoming the next major revolution in how we will use computers and have radically new digital experiences. Building a new VR experience is challenging. All the rules are different from the legacy 2D screens we are used to work with. Thinking in a real 3D space means rethinking the entire experience from scratch: what content do I need, what is comfortable for my users, what is exciting? Trying things out requires new tools and new approaches. The best way to see how things work in VR, is to build and experiment in VR as well. Also, it is a lot of fun! Most of this talk is on-stage VR demo sessions, where I will show several useful and free prototools to quickly prototype new ideas in VR.