I have one of the inexpensive Cold Steel 'hawks, which I purchased used. I've found it to be a pretty good gardening tool.
I recently removed a square foot of lawn to make a space to plant some catnap, just chop into the turf at an angle and off it comes, one strip at a time.. You can press your palm into the back of the head and wiggle the handle a bit and it digs right into the dirt like a little shovel, good for removing rocks and such.