Googies Cafe or Homeground down the Old High Street often seem to have things on a Sunday evening. Not sure how much you'd get paid, might be worth asking them though?
This is part of my site The 'Gerald that I built in a frenzy of excitement when I first moved here sometime in '04. I'd been a regular visitor for a while before that but I am technically one of those Down From Londons you get now. This site was a lot more dynamic with a calendar of events and voting for favourite venues and things, and I hear it was a useful resource for others who were thinking of moving to the area. Now I've moved out of Folkestone again (though just a couple of miles) it doesn't get as much attention as it used to. Ironic really as Folkestone itself is becoming the exciting place we knew it was just about to. I am not Gerald by the way, this comes from a pretend newspaper in an episode of The Day Today or something, the Portsmouth Gerald, and how there is a local newspaper here called the Folkestone Herald. Puns like this are GRATE aren't they? Do contact me if you have anything to offer, email anythign @ this domain, or try @folkestone or @pauly on the twitter.