Thanks for sharing your, and your brothers, work. I like the way you painted them.
"The dulcimer sings a sweet song."
Steven - cajon means "box" so technically they are all cajons, but the three small horizontal ones are divided into two chambers and held between the legs or in the lap. So most people would call them bongos. The vertical ones are sat on while playing and would be what most people think of when they think "canon."