A useful tool
I don't know how many garage sale trowels I've ruined while digging down to a bench mark or other monument because they won't stand much prying force. I recently saw one of these, a gardener's Nisaku NJP650 weeding and digging knife.
Somewhat pricey at $20-25, but very sturdy, sharp edges for cutting roots or other vegetation, and inch and cm scales as a bonus. Much handier than a machete for those occasions when you don't need the length. It comes with a sheath but probably isn't legal to carry in public.
I've cut myself just looking at the image.
If that is illegal to carry in public it's time to move.
I carry and use one of those. Be careful how much prying you do with it. The steel is rather hard (like in a knife) and therefore somewhat brittle.