Black Anker PowerCore 20K with red sticker

I lost my black Anker PowerCore 20K portable charger yesterday around 3pm. It's a compact rectangle, matte black, with a small dent on the bottom-right corner and a bright red coffee-cup sticker on the front. I had it in a gray zip pouch inside the outer pocket of my jacket. It was last seen near the Appleton Public Library on College Ave, outside the brick entrance near the coffee cart. It’s really important to me; I use it every day for work and travel, and it also has sentimental value because it was a gift from my sister. If anyone found it, please reach out—I'd be grateful to get it back.