Cut a bandanna in half on the diagonal, roll in twice, iron and pin. I cut off excess overhang at the ends. and then sewed a straight hem.
Then take a wash cloth. My friend used a hand towel but I felt that was kind of big - do what you like. Pin the hemmed bandanna to the cloth.
Get both sides and sew wherever the wash cloth meets the bandanna. It makes it look funny when it is laid out but when you put it on you can't see the lines. You could just not sew on the top of the wash cloth but then you would have a pocket on the underside and with food around and little hands you might end up with a kangaroo pocket full of food. Just a thought.
It is super simple and fast but looks so cute!