Coffee filter coloring:  Take a coffee filter and put it on a plate or on paper.  Get some food coloring.  Have your child use an eye dropper get the coloring and drop it on the coffee filter.  You can use different colors to make a colorful design.  By lifting the filter up by an end, the food coloring will run to create neat designs.  When dry, use an unfolded paper clip to poke through the filter.  Tie the other end to a string and hang it from your child's ceiling.  Your child will love that he/she is helping decorate his/her bedroom!