Incredibly important and amazing! More evidence that non-human primates (primate: monkey, ape, human) are serious tool users!! I remember in high school being asked in class about tool use.
I raised my hand to share what I had just learned from my idol Jane Goodall, who discovered apes creating and using tools (stripping a branch and using them to get ants out of an anthill). And about 24 years later learning this about the capuchin monkeys is astounding and kinda chokes me up!