corporate policy on personal items workstation

Hello,

Can anyone direct me to the corporate policy on having personal items w/you while you work or at your workstation? Like if you work in the back hanging is there a rule that says you can't keep tissues at your station? Or bandaids or extra masks? Looking into this for coworkers who have had personal items thrown away w/o warning and no one is aware of a rule that says we can't have a box of tissues. TIA!