Canada

Jane Goodall documented chimpanzees using tools back in the 1960s. The chimpanzee would strip leaves from a twig and stick it into a termite nest. The termites would crawl onto the twig which the chimp would pull out, and eat the termites. Personally I think this is more consequential since the "tool" had to be made.

On an aside, I have watched my dogs many times grab cat bowls (sometimes, but not always, after the cat is done) with their mouth and carry them off to clean thoroughly. I think if they had hands with opposable thumbs, they would be VERY dangerous for getting into stuff.