Reply to Potty training ideas?

What got my son interested in the potty was us just leaving the door open when we use the toilet. So my son has sat with me while I pooped, peed... same with my husband. And we tell him what we are doing and let him see the contents. We don’t reward him with treats for using the potty either. He just loves to flush toilets. And the rule we have is whoever’s poop or pee is in the potty gets to flush.