Something like this,
https://www.pbtech.co.nz/product/NETTPL0410/TP-Link-TL-PA4010P-KIT-AV600-Powerline-Kit-with-AC
What it does is run your network along the magnetic field of the power cable within your house. You plug one in the power point by your router and the other in the power point at the other end of the house.
Then you get two wireless access points and configure them to the same ssid (name) and plug one into your router and the other into the powerline adapter at the other end of the house.
It's very interesting technology but strangely works well and is an alternative to running ethernet cable everywhere and in my experience is more reliable than WiFi extenders.
Edit: apparently you can get variants of these adapters that have the WiFi access point built in. I haven't used one of those but that seems like a simple solution.
So, something like this https://www.pbtech.co.nz/product/NETTPL0422/TP-Link-TL-WPA4220-KIT-AV600-Powerline-Kit-with-N3
https://www.pbtech.co.nz/product/NETTPL0410/TP-Link-TL-PA4010P-KIT-AV600-Powerline-Kit-with-AC
What it does is run your network along the magnetic field of the power cable within your house. You plug one in the power point by your router and the other in the power point at the other end of the house.
Then you get two wireless access points and configure them to the same ssid (name) and plug one into your router and the other into the powerline adapter at the other end of the house.
It's very interesting technology but strangely works well and is an alternative to running ethernet cable everywhere and in my experience is more reliable than WiFi extenders.
Edit: apparently you can get variants of these adapters that have the WiFi access point built in. I haven't used one of those but that seems like a simple solution.
So, something like this https://www.pbtech.co.nz/product/NETTPL0422/TP-Link-TL-WPA4220-KIT-AV600-Powerline-Kit-with-N3