1: The all singing, all dancing navigation tool / camera / web browsing/ email touting, / instant messaging / video conferencing and lots lots more "phone" in my pocket.
2: internet and phone network connectivity for 1 above wherever I appear to want or need it.
3: The big flat screen in the corner which just works whether I want boring old television, streamed services, to use it as my computer screen, casted content from 1 above, Zoom video conferences etc.
4: 3D printing and other modern manufacturing tech which can be rapidly switched without huge cost and expensive wholesale retooling to produce different things.
5: Clean renewable energy. Lots and lots and lots of it, and more and more and more to come.