Since I took so much inspiration from this forum I’d like to share my own result.
Essentially it’s based on the matrix template with only minor modifications …
Many of my devices are battery powered. I still do not trust those Z-wave devices 100% therefore regularly check for the last battery update. In case the update is older than 24 hours the icon get’s coloured in red as a warning of a potential offline-state.
The weather widget I did by myself (almost everything else is picked from somewhere …). Sun Position comes from < Show Current Sun Position and Shadow of House (Generate SVG)>
S-Bahn schedule comes from < [https://knx-user-forum.de/forum/supportforen/openhab/901885-deutsche-bahn-monitor-denkanstöße-gesucht/page2]
Calendar : < [Solved] Show Google Calendar Events in HabPanel/Sitemap - CalDav Personal - Openhab 2.4>
Neato Botvac: < Neato BotVac Vacuum Cleaner Widget for HABPanel>
Solvis Heating: < [SOLVED] SOLVIS Heating>
Obviously there’s still much to be done. Camera’s shall be added, attendance record based on wifi-login, email notifications … maybe adding the SmartTV …
As it seems I’ll be grounded (Corona / Covid-19) for a couple of more weeks so I’m positive for some good progress …