1860's Straw Bonnet Form by Kimberly Lynch Saturday, April 21, 9am-5pm. Cost: $40, includes pattern, parchment and wire, braiding and thread extra. Learn to make an 1860's low spoon bonnet form made of hemp straw braiding. You will need to bring a sewing machine, thread to match, pins, scissors, hand needles, sewing gauge, measuring tape, etc.