I guess this is not strictly in the Steampunk genre as it is actually an original toolbox set from the 1800's, but it is beautiful and worthy of a post nonetheless. According to the original post "This incredible tool box for repairs of pianos has been created and perfected in the course of 30 years by Henry Studley, who worked for Smith Organ Co. and then to Poole Piano Company of Quincy, Massachusetts.
It is made of mahogany, rosewood, walnut, ebony and mother of pearl, materials that were probably taken from Poole Piano as scrap."
[VIA]
