A microscope that cost less than £50 and took under 3 hours to build using a common 3D printer could be transformative for ...
For instance, we use Jeena's TextEd instead of Apple's text editor. For browsers, email, chat, productivity, writing, and so on, we use FOSS and freeware apps, and wherever possible, ones that also ...
All of that isn't to say that Raspberry Pis are bad, or that you should never use them. On the contrary, if you have one ...