More relics from old southern farm site: arrowhead? round ball? other metal

[jamiefind]

Any gems of wisdom or experience out there that could help me learn a bit about any of these relics?

Is this just a decorative bracket?


Any chance this is an arrowhead?


Looks like there was a shiny surface coating on this one?


Almost looks like a metal plate perforated with holes:


I’ve never found a round ball. This isn’t one, right?


Uniquely shaped metal:


Looks like a twisted-off/broken tightener of some sort?


Thanks in advance