Hardware & software:
- AC/DC for various $ (on Amazon) from Jim Dalrymple.
- Photopea at https://www.photopea.com for free from Andy Ihnatko.
- iRobot Roomba i7+ (7550) Robot Vacuum Bundle with Automatic Dirt Disposal- Wi-Fi Connected, Smart Mapping, Ideal for Pet Hair (+1 Extra Edge-Sweeping Brush, 1 Extra Filter) for $1099 (on Amazon) from Rene Ritchie.