It is not worth the hassle to do fabric painting at a regular meeting. Clearly that is not enough time for the paint to dry.
Save this type of activity for a weekend camp where there is sufficient time for all the paint to dry.
At our unit, one parent got another parent to take her daughter home after Brownies. The parent that drove home found fabric paint all over his interior the next day. It turned out that the entire back seat had to be recovered and many hard feelings occurred over the whole affair.
PLEASE Everyone, LEARN FROM OUR EXPERIENCES HERE. It is not worth the grief.....