• Buy 100 toasters from AliExpress
• Put Pi Zeroes into them
• Code on them that searches for wifi networks, and sends disconnect packets
• Connect to the network after doing this, hoping someone pressed the WPS button
• Run Tor hidden ssh service once connected, or mainline DHT publish + hole punch
• Drive to a bad part of town, leave the van door open
• Let people steal the devices and distribute them

Congratulations! You now have an anonymous network!