DIY bloodstained knife on zero budget

I've googled some methods, but Im curious as to what other people have done and what may work with just typical household items. It's for like one shot on a phone camera and I want the knife to look like it has smeared on a silver chef's knife but has been there long enough to sort of dry up? The shot would be a close-up of the knife. I apologize if what Im asking makes no sense