Starting at the 1:30 position is a piece of Purple Heart, at 3 is Black Walnut, 4:30 is Red Heart, 7:30 is White Cedar, 9 is Eastern Red Cedar, 10:30 is Sumac. The center is a piece of maple from one of the wood projects I did as an undergraduate - probably my bedside table, which was unusually pink. The background is Red Oak; the frame is Black Birch.
Grandpa also made a Dresden Plate and a Log Cabin, and a five pointed star of his own design. I picked this one to go with the daisy quilt I've been working on.