Lost heavy-duty black toolbox with hand tools near the riverwalk park in Wausau.

I realized I left my black toolbox at the park near the riverwalk in Wausau while I was fixing a friend's lawn chair. It's a heavy-duty toolbox filled with hand tools like wrenches, a hammer, and some screwdrivers. If you find it, I really need it back as it's quite essential for my weekend projects.