In the end, it should be a one-liner log where one could search for events and/or filter stuff by tags. It should have a simple web frontend that looks a bit like this. Instead of "host" it should have tags, so people could add something like "Replaced the water filter in the coffee maker" and add tags like "kitchen", "coffee" and if you want to know what happened in the kitchen, you can filter by the "kitchen"-tag. Something that also non-technical people can use.