Something I use is a buddy and a laser pointer. Three targets set up. At signal I draw and partner “ropes “ a target of his (random) choice. That’s the threat to be engaged. Sometimes he delays the mark and sometimes no threat is indicated. I engage until the threat is neutralized as indicated by an off laser. Or I don’t engage if no threat is indicated. Keeps me thinking and the shot is made deliberately and threat dependent rather than automatically. It’s at least fun if nothing else.