Help keeping book clubs fresh

I have been running book clubs for several years. I discuss characters, themes, structure, POV, specific plots and always end with “what will you take away” from the novel. I feel that I might be getting a little stale and would love some suggestions to liven things up or add something new. My groups meet once a month but I meet 9 different groups. I might be the only one feeling this way but welcome ideas from this group.