You will need:1 (4 lb 12 oz) box of Borax
1 (3 lb 7oz) box of Arm & Hammer Super Washing Soda
1 (3 lb) container of OxiClean
6 bars of Ivory soap, shredded. I just use a cheese shredder.
1 (4 lb) box of Arm & Hammer Baking Soda
3 bottles of Scentsy Washer Whiffs (you can also use 2 bottles of Purex Crystals fabric softener, but I much prefer the Scentsy. Scentsy raises the overall price though)
I layer the different ingredients in the mop bucket, putting in about a 3rd of each at a time. Then I mix it all up by hand and use a measuring cup to scoop it into my washer with each load. Some prefer to keep a small amount in a smaller container, I don't mind having the whole bucket on a shelf in my laundry toom, it's not in the way.
I haven't yet ventured into making any other cleaning products. Do you have any that you use and swear by?