mealworms are probably one of the easiest things to grow.
next time you get take out chineese, take the quart plastic jug, throw some oatmeal in there, throw some meal worms in there, a bit of lettuce, throw it in the fridge and there's your mealworm farm.
Ok, yah you probably are going to want to go a little better than that

but just saying you don't have to get all fancy with them, they are stupid easy to grow and you can get by for really cheap prices, often times using 'free' stuff. When I raised bearded dragons and veiled chameleons I went, the raise your own meal worms route because crickets were pretty expensive and well.. they get stinky real quick too, the worms were a no brainer.
Aaron