Small plastic bowls
For every color you wish to use, put 1 package Kool-Aid and 1 ounce of vinegar in individual plastic bowls.
Mix until Kool-Aid is dissolved.
Using rubber bands, pull and twist T-shirt into different shapes.
Dip rubber-banded ends in bowls (make sure you wear gloves or your hands will stain).
To set colors, iron on medium-high using an ironing cloth between shirt and iron.
Let set for 24 hours before washing.
To be safe, wash separately the first time. Launder T-shirt as usual and it’s ready to wear.