The administrators of the state veterans' homes are hereby authorized to:
(1) Institute programs of hobby promotion designed to improve the general welfare and mental condition of the persons under their supervision;
(2) Provide for the financing of these programs by grants from funds in the administrator's custody through operation of canteens and exchanges at such institutions;
(3) Limit the hobbies sponsored to projects which will, in their judgment, be self-liquidating or self-sustaining.