Get a leopard gecko, adult leo, Adult beardie, Or a corn snake. Adult beardies only need 8 crickets a week 15 max, and they eat alot of vegetables, greens, and fruits as there main diet. Adult leos do not require crickets every day nor mealworms.
Maybey 8 crickets is all they need every other day. mealworms are not that expensive, here they are only a dollar or 1.50 for 300 mealworms. Btw mealworms live for months if kept on a mediocre diet of bran and a vegetable source of moisture.
Snakes are good, they feed on mice, pinkies, rats ect... Or garter snakes, they eat fish, can be trained on pinkies but with vitamin supplements.