A few years ago I accidentally left my laptop at work, and couldn't program over a long weekend. I had a first generation raspberry pi kicking around so I pulled that out, hooked it up to my monitor, installed nodejs and git and got to work from there.

It took 700ms or so for my server process to even start on a r.pi - I'd noticed a brief delay on my laptop, but it was so awful on the pi that I ended up spending the whole weekend profiling and optimizing. Anyway, come Monday I pulled the changes onto my fancy laptop and they made a noticable difference in subtle responsiveness. Everything just felt faster. I probably wouldn't have even noticed if I didn't spend that time programming on the pi.

Facebook has "slow internet thursdays" or something, where once a week developers can opt in to experience their internal facebook dev environments in the same way it feels for people on slow connections in poorer countries. I think that sort of thing would be good for all of us. Programming in constrained environments makes our software work better everywhere.