Can highly recommend outline (https://www.getoutline.com/). You can self-host or opt for the hosted version. Built and maintained by one of the linear devs.
Something like https://www.refurbed.de/ or https://www.backmarket.de/. Works great for tech (higher resale value, small weight), but I can imagine it is tricky to set up the same business model for small non-tech items, furniture etc.
Have been using it for over 2 years now, for a team of nearly 80 people. Love it - both self-hosted and as a service. Very quick to respond to issues on github, and the tool keeps evolving.
Azure has this in their Cost Management page, available for each subscription. You can set a budget and get notifications about when you are reaching its limit. Not sure about the power it has with re to shutting things down.