It’s better than nothing, surely better than proprietary software.

I’ve used Invoice Ninja for awhile. Works great. Self hosted but not foss.

“Cloud” storage is indeed more expensive. But depending where you live, you count the electricity cost in, and you use the storage ‘only’ for backups. Maybe it makes more sense to pay for remote storage in a datacenter. Check out Hetzner Storage Box, it’s what I use.

If it’s still too expensive, maybe ask a friend or family member (maybe someone that uses your media) to setup a nas at their home for backup purpose. (I use this for my media)

Make sure you encrypt your backups if you use a remote location for your backups.

You have to decide what’s valuable for you. For me my media is, I can just download everything again, but the time I put in to have every movie the correct subtitles without ads, the correct posters, metadata etc. I value my time, I don’t want to do it again if I loose everything.

https://www.usememos.com/

Take out the hard drive out of your laptop and put the drive for the server in it, install Debian using the built in monitor and keyboard of your laptop.

RSS Guard seems to have support for Google Reader API, so FreshRSS is also supported. It’s also a Qt application. You can also find other clients on the 3rd party clients page of FreshRSS

On Linux I use NewsFlash

There are a lot of different methodes you could try. I think the easiest is to connect both systems with a (mesh)VPN like Wireguard, ZeroTier or Tailscale. Then you can simply copy stuff over using rsync -a (archive mode) with a cronjob or using special tools like Borg backup, kopia, etc

n8n.io is great, but not open source.