So I have a have maybe a few hundred books at home and I think it's time I put together a collection of what I have. I'd love a database of author / title / publication year / physical location that I could search through ideally.

Is there software that can help with this? I had a brief look at LibraryThing, but I think it costs money for the quantity of books I'm looking at. I briefly toyed with the concept of making my own app that could scan an ISBN to speed up the process (since most will have ISBNs). I wonder what the people of Tildes suggest? Has anyone here done something similar?

First of all, I want to say very big THANK YOU for all who contribute to various libre, open source etc. projects. I'm so happy that people love sharing knowledge, skills and fruits of their work.

But to the topic - how do you find time for it?
Whenever I update my Debian or Axpos or any other libre software I see soooo many updates/changes made by (probably soooo many) people. And I always ask myself a question - when did they do that? Where have they found time for contributing? For me full time work makes me so tired that it's the last thing I think about after work hours. Especially in the office job, after x hours of sitting before my monitor I truly hate every next minute after work. I would love to contribute some code, I would realllly love to. Sometimes I find some bugs and try to report them and that's all I am able to do. What frustrates me the most is that I have abilities to code because it's my daily job, but I don't have energy to do that.

So, could you tell me how do you find time and energy to contribute to libre projects?