This is a pretty simple Rainbow Loom pattern, but all the tutorials I found online needed a loom or complex arrangement of pencils. I came up with this method you can do with only your hands, and a hook or pencil if you need it.
You will need 76 bands and a C or S clip. For this pattern, I used 24 black, 9 red, 10 orange, 9 yellow, and 8 each of green, blue, and purple.
Clip the final band and take the bracelet off your finger. Then, clip the first band on the other side and your bracelet is finished!
Once you learn the method, you can make it a different length or change the colors around as much as you want.