Backroom items

My stuff be teleporting into the backroom I swear bro. First it was my water bottle but at least I found that one and then somehow at school, my phone disappeared. :/ (Ok I myself am just irresponsible though but yeah, stuff really do disappear the second you take your eyes off of it) thanks goodness a teacher found it though so I'm balling. But now it's my braces elastic bro. I already lost one pack...why did the other one evaporates? What the freak man. It was in my pocket and I haven't taken anything out yet, yet it's gone. :(