I’ve actually been pretty good about keeping up with NaNoWriMo this year. In fact, I’ve been slightly ahead most days, when I register my word count on the site.
I have a desktop computer I could be writing on, but it’s in the spare bedroom, and if I’m writing, I’d rather be at my work table. I’ve been using my tablet, and even my phone. For just the brute “getting the words down” part, I’m using Evernote. I’ll move it all to Scrivener later, but for now, Evernote lets me easily sync across devices. I can write on my phone, then pick up my tablet two minutes later and everything is synced. (And yes, I could effectively do the same thing using Box, but it’s clunkier.)