Where can I find Betta Fish Bowls & How Much Do You Feed Betta Fish?

Hi, My name is Danny. I recently bought some Betta fish at walmart basically because I wanted to get some practice before buying the expensive betta fish. My betta pair recently spawned and I now have a lot of baby betta fry. I have a few friends and family wanting a betta fish, and although I am keeping mine in 10 gallon aquariums and 55 gallon aquariums I would like to find some of the bowls you find at walmart. Ive looked on ebay, Ive searched google with any word imaginable, and I was going to get beanie baby boxes but theirs so many sized I am not sure which to get, and also how would they breathe? Anyhow my last question is how much do you feed your bettas. Ive had mine over 2 weeks now and I purchased Wardley Essentials Betta Food which is a pellet, and Tetra Freeze Dried Blood Worms. I have been giving 3-4 pellets per fish for my adult pair. On occasion 2-3 times a week im giving them 1-2 bloodworms per fish. My fry are being fed very fine crushed fish flake food. They seem to be doing ok. Their in about 5 gallons of water in a 10 gallon tank and are 1 week old today. I am adding a gallon of water per additional week until its full as a site mentioned. Any help is appreciated. Thanks. Anyone that has bought any betta fish and has the betta cups, what do you want for them? Make me a price and I may buy them and let you ship them. God Bless.