I extracted a chip (by dissolving the plastic in acetone) from my card and glued it to the wriststrap of my Pebble watch :)

Curve Pay has worked well for me. Only good alternative as it doesn't depend on Google Play Services too

Yes you can use Curve pay.

Edit: Apparently that's Europe only? I'm in Europe so yeah. I didn't know that.

There's Curve Pay in Europe. In the US, I'm not sure.