I don’t know of any kits that already put together, but you could definitely make him one.
Get him a good pair of shears for trimming, and a beard oil. there are so many oils out there, but good ol’ Jojoba oil works just as well. A beard comb/brush would be great as well. And if he’s got a serious mustache you can get him some mustache wax, firehouse moustache wax is good if you want last all day and not budge style.