For these stars I used variegated red-white-blue yarn. The weight of yarn and size of crochet hook are not important for this project. If you want bigger stars, use a thicker yarn and bigger crochet hook. If you want smaller stars, use a thinner yarn and a smaller crochet hook.
Round 1: Chain 4 and slip stitch into first chain to form ring
Round 2: Chain 3; double crochet 9 times into center of ring; slip stitch into top of
Round 3: chain 1 and, in same stitch sc, half dc, dc, half dc, sc, slip stitch; chain 2; skip one stitch; in next stitch sc, half dc, dc, half dc, sc, slip stitch. Repeat until you have 5 points. After making the 5th point of your star, slip stitch in the space below your first point. Pull yarn through, cut off and weave in ends.
For a little more fun, attach a magnet to the back of each star to make it into a “fridgie.” Wal-Mart carries small round magnets with a foam adhesive on the back – 18 pack for about 97 cents in the craft section.