Comics
Reading comics digitally. On Windows I use SumatraPDF which is good in comic book reader formats. On my iPad I use Chunky. I use the excellent Calibre tool to manage my ebooks. It also has great tools to convert one ebook format to the other, transfer books to my ereader (currently an old Kindle Paperwhite 7th generation, I believe more than 5 years old. I like it despite its useless web browser).
Your environmental footprint
Test your environmental footprint and how to better the world.
Here is the Dutch version I took. My usage result was 2.6 earths, which I did not really understand as a measure. But it is too high, yet somewhat below the average person in NL. This is the UK version of the footprint calculator. This has different questions, are a different measure as outcome. Most interesting is, of course, the advice about what you can do to reduce your footprint.