Ask HN: If you code on a beach or at a bar, what do you use?

Thank you. I am / have been a digital nomad since 2006. Wired Magazine even published an article about us back then in our solar van in Australia trying to find 2G internet. I feel quite old ;) But after all this time, I am still dependent on having a laptop to do my job! An e-ink screen is much nicer for outdoors but I don't know of a system built on one that would be worth investing in. It's also a software problem. I would really like to be able to write with a pen but I don't know of anything good at understanding handwriting for stuff like this:

for (let f of arr.filter((a)=>a>0)) { ... }

In case you are interested to learn more on digital nomading: nomadlist.com is a website with a list of nice cities to travel and live in.