I still have a couple of cantennas that I made, oh, about 20 years or so ago. There was a coffee shop half a block from me that didn't have any WiFi (owner behi

I still have a couple of cantennas that I made, oh, about 20 years or so ago. There was a coffee shop half a block from me that didn't have any WiFi (owner behind the times), so I set up a WRT54G with DD-WRT as a client bridge, hooked a cantenna to it, and pointed it at the coffee shop. With the cantenna at the other end, I was able to get a solid signal. These days? With mobile data anywhere I'm likely to go, that's more trouble than needed. Aside from that, modern WiFi isn't really conducive to external antennas.