here are two similar boxes that I have made recently with burr London plane
both are finished with u-beaut EEE & shellwax cream and are 3" wide by 2" tall
Burr is Brit for Burl. London Plane is a type of tree. The wood resembles Sycamore. Bow River Hardwoods in Chilliwack had some Spalted London Plane a few years ago and might still have some if you ever get out that way.