For Micros,Bananna,Walter Worms,I use instant potatoes instead of oats,everything else like the others said.
For Vinagar Eels,a gallon container(pickle jar works good)50% Apple Cider Vinagar,50% water,an Apple cut in half,put your culture in the jar,cover with Cheese Cloth and a Rubber Band.
White Worms or Grindals,any worm bedding mix you can get at a fishing supply store(I get mine at WalMart),add water untill it is damp(you should be able to grab some and make a ball that will hold together,with a few drops of water coming out when you squeeze it gently).
Depending on how many worms you get,they should eat the food in 1 week.
A piece of bread(I use whole wheat)cut it into strips(as big as you want)spread some good,no flavor yogurt on each piece,put it yogurt side down,spray it with water(not tap water)untill it is wet and soft,sprinkle some yeast on it and they will eat it.
You can change to Fish flake food also,sprayed with water,thier food needs to be wet.
Alge Wafers are good also,they have alot of protein in them.
Like the saying says"You are what you eat"!,same thing for your worms and fish.
Hope this helps!!