A while back I picked up a couple of tank tops on a clearence rack. Today I finally dyed them.
I accodion folded them, and rolled them then put rubber bands on them.
After wetting the shirts down I used the leftover dye from the ice dyed shirts. https://alwaystimetoprocraftinate.wordpress.com/2014/08/26/ice-dyed-shirts/
When the dye sets a little I will remove the rubber bands and hang them to dry and wash them.