I took an iPod last year, and have a Blogger blog, but when I started out in France there wasn't much wifi. The Blogger app only worked when connected, so I used to write e-mails, or take photos and e-mail them, and send them to my blog. It meant that when I ended up being able to connect, you would hear a 'whoosh' as all the draft e-mails suddenly 'left' and published themselves on my blog. The photos would each be a separate post, which wasn't ideal, and the quality of photo on the iPod wasn't all that good, but it gave people back home a bit of a 'taste' of where I was.
I have since downloaded the Blogsy app that someone else mentioned, and it looks good- and I understand it has the advantage of letting you compose posts with text and photos off-line. But as I haven't left home again, I haven't yet played around with it.
The iPod worked fine, but the screen is small for my old eyes, and I kept having to expand it and would only see part of it. "Next" time, I would take an iPad Mini or another similar sized tablet without a Sim, and will probably only use wifi again when it is available.
I have actually rewritten my blogs back at home and added photos so they can be read in chronological order- but I did that mainly for the Le Puy route where there wasn't much info previously in English.
Margaret