It's been long time since I posted here. Mainly because I started to use my kindle for… reading books.

I almost completely switched to ebooks and recently I discovered that I really miss one feature of a paper book – a cover. A cover that helps me to visually remember a good book, its title and author. And then I recalled NiLuJe's screensavers hack.
As the python installation takes a lot of space I thought I could replace python tools with my mobitool binary. I gave it a quick try and it works fine. The downside is I had to drop KFX support, because my tool does not support it. Anyway for my use it is not needed as I don't buy books on Amazon. I am posting
link to my fork here, in case someone will find it useful. Bear in mind it is a quick mod of the original work, only tested on KT.
Thanks again NiLuJe! I am looking at the cover on my kindle's screensaver now.