How to make a hairy caterpillar: Entice your kids outdoors by helping them grow their own furry pet caterpillar. It’s a cinch to make! Simply fill a stocking with grass seeds, then it needs only a daily watering and a spot where it can bask in the sun. In about a week, your kids will delight in witnessing their new pal sprout a grassy coat, and enjoy trimming and styling it, too. Make just one or create a whole furry family!