When I got my used trumpet a few weeks ago, I opened up the case, and took out the misc. items that were in it, included an almost-empty bottle of valve oil. When I went to close the case up again, the bottle had vanished. I looked everywhere, around the chair I was sitting in, in the case, etc. Nowhere. I blamed our beagle, who will sometimes carry around small objects, but I thought it was strange that I never found it. Today when I was practicing, I noticed that the case has a space under the raised area that holds the trumpet in place. Sure enough, there was the bottle hidden under there.