Whether I would report/care about menstrual blood would really depend on the context. If the model happens to get her period during a show, or just has a leak - that's an understandable mistake, and doesn't really warrant a report. If, on the other hand, she's doing a show focused on the blood, it may get reported, especially if there is another person involved. It's less an "ew, gross, blood" thing, and more of a hygiene/safety thing.
I would see defecation/vomit shows the same way, especially vomit, as forcing yourself to throw up is actually bad for your body, and can deteriorate the lining of your esophagus, your tooth enamel, etc. Forced/repeated defecation can also have health risks, especially if laxatives are used. I can't think of any at the moment, and I'm too lazy to look them up, but I think there may be heart issues involved.
Penetration with items not meant for it - Would depend on the safety of the item used. Some items can be dangerous, like glass bottles, whereas others, like bananas, are just silly.
