how do i hide my sharps container and gear from parents

ordering some more gear to my house but my parents are getting suspicious that im addicted to something (im not) how do i avoid them from finding my sharps container/gear, what methods worked for you guys?

 

[Excelatory]

Best guess is that when you fill up a sharps container to put it in a backpack and throw it in a public bin or something on ur way to or out of school/work/gym