Nearly lost my USB

Suddently I found out that my USB disappeared from my pencil bag. I place it in my the pencil bag for a long time.Where is it? The image of it flashed in my brain repeatedly. I tried to remember a large amount of files stored. They are my precious memory of my whole F.6 year. I looked for it inside the drawer, down the floor, at the corner, on my bed. Where's it? Where was it? Scenes of the USB was placed reformed in my mind, still I couldn't find it. Lastly, I saw it on my bed! Nothing happened, I took a deep breath.