1 x Debian mini ITX server running Zoneminder for CCTV cameras
1 x 'spare' mini ITX cube running Debian as a services backup (email and Web stuff)
1 x Quad core fanless mini ITX thingy running the house home automation (Debian, Node-RED, MQTT, Zigbee2MQTT, Mosquitto)
1 x Asus i5 desktop for main home office. 6 core + 32GB RAM for virtualisation. Dual boot.
1 x DIY i7 3rd gen (old desktop)
1 x Asus Zenbook flip - home work and travelling laptop
1 x Lenovo T420 + dock. Previous round-the-house 'portable' workstation
1 x Raspberry Pi 3 as a media client hooked to my hifi for synced room-room audio
2 x Raspberry Pi 3 for STEM development and STEM days
1 x Raspberry Pi 4 for STEM development and STEM days
3 x retired laptops with some 'emergency' mileage in them, or take to STEM days
1 x Lenovo Thinkstation (retired desktop from the Mrs)
Samsung tablet
Motorola G8 phone