I found an el-cheapo german-made pack of generic craft chisels of varying shape and size.
I was reading in a bonsai book that chisels were especially helpful when undertaking grafts with ficus species, though I was only ever trained to use a budding knife when studying horticulture.

i dont think that chisels would be good for grafting you need a thin very sharp knife the angle of the chisel might be too great.chisels do make great tools for carving deadwood and removing wood from the middle of scars