Here are a few other things that work well as zigbee repeaters with easy availability:
Samsung zigbee outlets:
https://www.amazon.com/Samsung-SmartThings-Outlet-GP-U999SJVLDAA-Smart/dp/B07F96JB63/
Innr zigbee smart plugs:
https://www.amazon.com/Zigbee-Philips-SmartThings-Google-Required/dp/B07SQGG8Z7
@ihardyadi's zigbee environmental sensor: - these are really phenomenal
