Lost light blue backpack with pineapple and space rocket patches, containing a water bottle and first aid kit, lost while hiking in the Tri-Cities area.

I lost my favorite light blue backpack with a pineapple print while hiking in the Tri-Cities area last Saturday. It has a few small patches on it, including one of a space rocket. I also stored my water bottle and a small first aid kit inside. I realized it was missing when I was almost back to the parking lot, and I've looked everywhere to find it.