high efficiency cheap solar panels. We'll see if they actually work remotely as well as they claim, but the design definitely looks to solve some old problems. Last I checked, photovoltaic panels have a threshold, below which they do nothing but take up space, and concentrating light with an orb (cheap) onto a small, high efficiency receptor (cheap-ish), is much more cost effective than trying to build a full size panel of the same stuff.
3d printer pen. Sounds like it's kind of hard to work with without a lot of time and practice, but seriously; 3d printer pen. Cheaper than a full 3D printer, and doesn't require any modelling software, which can get pretty darn spendy. Actual retailer's site is here http://www.the3doodler.com/
Heatvision in your phone case. If they can make it that small, they can make NVGs or equivalent that aren't obnoxiously massive. If they make one for a phone I get/have, I might take a look at it.
Day by day, we get closer to virtual reality that isn't obnoxious. Next step will be implant/neural stuff
Last but not least, this drone/truck/copter is ugly and probably won't work and I want one anyway.