Your kids are squabbeling over a new toy? Again? They are fighting all the time, screaming at each other and are living proof that you just got yourself the world's hardest job? If you are tired of the constant quarrels between your kids, this is a fun way to teach them how to get along.
Linked together with one shirt, they will need to see their siblings' needs and wishes and start cooperating instead of quarreling.
Some time of putting oneself in their siblings' shoes ..um.. shirt, might help your kids.
Don't introduce this as a punishment, but have your kids decorate the shirt together and explain the purpose in a moment of piece and harmony. This way, they will learn to actually get along.