Yep, for some of the stuff I used treats to lure Grace onto or over the equipment. Some of it depends on whether or not you ever want to compete. If you don't want to compete, proper performance isn't as important on most of the equipment. If you ever get an A-frame, a teeter or a dogwalk (bridge), proper performance is crucial to your dog's safety. But for the jumps, tunnel and weave poles, you can have a bit more fun. Most Cockers LOVE to jump, so it's easy to teach jumps. You can find patterns online for PVC jumps that are inexpensive to make and light to move and store. Weave poles are a bit trickier to teach, because there are competition requirements that have to be met, but if you're just playing with them, I'd use luring to get your dog through them. The tunnel is easy as pie - and most dogs LOVE running through the tunnel.
Polly, I used to do therapy with Quigley (now gone) and Farley, as well as with Mare's boy Billy's momma Keeley. I plan to get Grace tested to do therapy work as well. I think she'd be good at it, since she's so even-keeled and gentle. And she LOVES people. Therapy work is extremely fulfilling.