I hate running around and trying to find tools when I’m working on a project, so whenever possible I like a tool that can combine the functionality of two tools into one — like the Sod Buster here. It combines a small sledge and a cutting edge. It could help out if you’re doing concrete forms around roots, for instance, where you could be pounding stakes and cutting roots all at the same time.
I’m not quite sure who makes it, but I found this one with a heavy-duty fiberglass handle online for $20.
Sod Buster Tool [Buckeye Trap]