I've power enough in my shop to run a few miners. No direct Internet connection but there is a wifi hotspot my laptop/netbook can access. What I'm stuck on it how to add a switch or router to connect a couple miners.
Get a pi3 for like $55 (amazon.com) and bridge wifi to LAN.
Connect a switch to the LAN port and there you go
Google pi3 wifi to LAN and you will find a lot of tutorials.
Edit: note that pi3 can't connect to 5g wifi