I use Missy's old ramp as a dog walk set up against the picnic table. On the other end is an upturned bucket with a rug as a step down. I need to paint it and add some more grip tape or sandy paint.This is an upturned bin with some "no slip" cloth on it as a raised table. Clearly this will only work with a small dog.
Jack preferred to play with his toys than try any of the obstacles. I did get him to do the jump but only once. It just isn't his thing. (And we are fine with that.)
You can make up a course with things you have handy around the house and yard if you are motivated to try it. It doesn't have to look fancy. Just be sure anything your dog will get up on is sturdy for safety and keep the jumps low in the beginning of training. And if you don't have anything to jump, if they are willing, you can always use your other dog!