We can make it more interesting by introducing more feeders in the middle. Such multiple feeders must work to stay in sync since they can't see each other. A useful technique is simply to have someone count the rhythm of the passes out loud. With three or four feeders on the inside of the circle with their backs together and a number of feedees on the outside, the feeders have to move around the circle fairly quickly, trying not to bump into each other. To make this easier and to make the pattern yet more interesting, you can have the feedees moving slowly sideways around the outside of the circle in the opposite direction.
Some interesting patterns have four jugglers in the middle and four outside.
With all moving to their own right, they can pass every right hand to a new juggler. Or they could pass every other to make it a little easier, or pass two clubs to each juggler to allow time for getting to the next juggler. If you eliminate the movement from this pattern, you can have each juggler just feed the two nearest facing jugglers, say starting on the left. Then maybe start moving after some number of passes. The old feedee opposite the fourth person becomes a second feeder in the pattern, passing to the original feeder and to the new person.