Their plan is to make the tees and paint them in different designs. Then they are going to package them and sell online and in the neighborhood. Is this ok to do? I know there are several patents for golf tees and I don't wish for them to get into any trouble. Any advice?
I would guess that since golf tees have been around for scores of years, that there aren't any patents on them, but in any case, you might not want to copy the look-and-feel of a tee, as it might be a problem on copyright grounds, but that's off-topic for this site.