What should a photographer give?

It's no problem to send the lens, but it's best to find out what brand of camera he uses first, because different brands of camera lenses can't be used universally. There is also what style, scenery, portrait and macro he is good at … and then choose the right lens. It is also necessary to find out what shots he has, and it is not good to send them again and again. Or you can give him a tripod and a camera bag, both of which are good and both of which are universal, which saves you the trouble of asking him about the specific camera brand.